Antibióticos naturales y semisintéticos

<p>Impurity Flucloxacillin EP Impurity B<br>Applications Flucloxacillin Penilloic Acid (Flucloxacillin EP Impurity B) is a degradation product/impurity of Flucloxacillin (F419200).<br>References Aboul K.A., et al.: Anal. Lett., 17, 1667 (1984),<br></p>

<p>Stability Light Sensitive<br>Applications Di-2-(Hydroxyphenyl)acetamido Cefprozil is an impurity in the synthesis of Cefprozil (C243910), semisynthetic oral cephalosporin consisting of approx. 90:10 Z/E isomeric mixture. Antibacterial.<br>References Jones, R.N., et al.: Diagn. Microb. Infect. Dis., 9, 11 (1988), Barbhaiya, R.H., et al.: Antimicrob. Agents Chemother., 34, 1204 (1990)<br></p>

<p>Stability Hygroscopic<br>Applications Ethyl (Z)-[2-amino-4-thiazolyl](methoxyimino)acetate is used in the preparation of ceftriaxone-d3 (C245002), which is a labelled antibacterial.<br>References Reiner, R., et al.: J. Antibiot., 33, 783 (1980)<br></p>

<p>Applications 4-(2-Fluoro-4-nitrophenyl)morpholine is a reactant in the synthesis of 5-​substituted oxazolidinone derivatives with high antimicrobial activity.<br>References De Rosa, M., et. al.: Eur. J. Med. Chem., 69, 779 (2013)<br></p>

<p>Applications A tetrahydroisoquinoline alkaloid with antitumor activity isolated from the Caribbean tunicate, Ecteinascidin turbinata. It is the first marine anticancer agent approved in the European Union for patients with soft tissue sarcoma (STS). Antineoplastic.<br>References Sakai, R., et al.: Proc. Natl. Acad. Sci., 89, 11456 (1992), Aune, G., et al.: Anticancer Drugs, 13, 545 (2002), Herrero, A., et al.: Cancer Res., 66, 8155 (2006), Sugasawa, K., et al.: Carcinogenesis, 29, 455 (2008),<br></p>

<p>Impurity Erythromycin EP Impurity B<br>Applications N-Demethyl Erythromycin A (Erythromycin EP Impurity B) is a metabolite of Erythromycin (E649950).<br>References Rich, D.H., et al.: J. Med. Chem., 18, 1004 (1975), Itoh, Z,. et al.: Antimicrob. Agents Chemother., 26, 863 (1984), Omura, S., et al.: J. Antibiotics 38, 1631 (1985),<br></p>

<p>Impurity Lovastatin EP Impurity D<br>Applications Lovastatin Dimer (Lovastatin EP Impurity D) is an impurity in Lovastatin (L472225) bulk drug.<br>References Houck, A., et al.: Talanta, 40, 491 (1993),<br></p>

<p>Applications 7-Chloro-6-fluoro-1-(4-fluorophenyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid is a 1-arylated derivative of 1,4-dihydro-4-oxoquinoline-3-carboxylic acid with antibacterial activity.<br>References Radl, S. et al.: Coll. Czech. Chem. Comm., 54, 2181 (1989):<br></p>

<p>Applications [3-Fluoro-4-(4-morpholinyl)phenyl]carbamic Acid Phenylmethyl Ester is an intermediate in the synthesis of Linezolid Dimer (L466520), an impurity of the antibacterial agent Linezolid (L466500).<br>References Xu, Heteroatom, Chem., 19, 316 (2008); Wang, J.W., et al.: Lett. Org. Chem., 5, 336 (2008);<br></p>

<p>Impurity Amoxicillin EP Impurity B ; Amoxicillin USP Related Compound B<br>Applications L-Amoxicillin (Amoxicillin EP Impurity B) is an isomer of Amoxicillin (A634235), a semi-synthetic antibiotic related to penicillin.<br>References Brogden, R.N., et al.: Drugs, 18, 169 (1979), Bird, A.E., et al.: Anal. Profiles Drug Subs. Excip., 23, 1 (1994),<br></p>

<p>Applications Protected rac Zearalenone-d6<br></p>

<p>Applications Erythromycin Glucoheptonate is a derivative of Erythromycin (E649950), an antibiotic.<br>References Delaforge, M. et al.: Biochem. Pharm., 32, 2309 (1983); Niederau, W. et al.: Chemother., 26, 121 (1980);<br></p>

<p>Stability Hygroscopic<br>Applications 2-Chloroethoxy Roxithromycin is an impurity of Roxithromycin (R700850); a semisynthetic Erythromycin (E649950) derivative and antibacterial.<br>References Jones, R.N., et al.: Antimicrob. Agents Chemother., 24, 209 (1983); Barry, A.L., et al.: Eur. J. Clin. Microbiol., 5, 536 (1986); Grassi, C., et al.: Chemioterapia, 6, 41 (1987); Gasc, J.C., et al.: J. Antibiot., 44, 313 (1991);<br></p>

<p>Applications Produced concentration-related relaxations of mouse anococcygeus, in a range similar to that already found for NO and other nitrovasodilators. A potent relaxant of non-vascular smooth muscle. Serves as an NO donor.<br>References Bauer &amp; Fung: J. Pharmacol. Exp. Ther., 256, 249 (1991), Gibson, A., et al.: Brit. J. Pharm., 107, 715 (1992), Shaffer, et al.: J. Pharm. Exper. Ther., 260, 286 (1992), Jansen, A., et al.: J. Pharmacol. Exp. Ther., 261, 154 (1992), Lander, H.M. et al.: J. Immunol., 150, 1509 (1993)<br></p>

<p>Applications Lovastatin-d9, is the labeled analogue of Lovastatin (L472225), an antihypercholesterolemic agent. A fungal metabolite, which is a potent inhibitor of HMG-CoA reductase.<br>References Bilheimer, D.W., et al.: Proc. Nat. Acad. Sci. USA, 80, 4124 (1983),<br></p>

<p>Stability Hygroscopic<br>Applications Kanamycin (K137500) derivative as synthetic byproduct of Amikacin (A578500).<br>References Kawaguchi, H., et al.: J. Antibiotics, 25, 695 (1972), Naito, T., et al.: J. Antibiotics, 26, 297 (1973),<br></p>

<p>Stability Very unstable<br>Applications Cefixime Impurity is an impurity of Cefixime (C242800); an orally active third generation cephalosporin antibiotic.<br>References Kamimura, T., et al.: Antimicrob. Agents Chemother., 25, 98 (1984); Yamanaka, H., et al.: J. Antibiot., 38, 1738 (1985); Guay, D.R.P., et al.: Antimicrob. Agents Chemother., 30, 485 (1986)<br></p>

<p>Applications Di-TFA Salt of 2,6-Diamino-2,3,6-trideoxy-D-ribo-Hexose is a degradent of Tobramycin (T524000) a single factor antibiotic comprising about 10% of nebramycin, the aminoglycosidic antibiotic complex produced by Streptomyces tenebrarius. Antibacterial.<br>References Koch, K.F., et al.: Antimicrob. Agents Chemother., 309 (1970), Welles, J.S., et al.: Toxicol. Appl. Pharmacol., 22, 332 (1972), Dash, A.K., et al.: Anal. Profiles Drug Subs. Excip., 24, 579 (1996),<br></p>

<p>Impurity Terbinafine EP Impurity D; Terbinafine USP Related Compound D; Terbinafine BP Impurity D<br>Applications N-[(2E)-6,6-dimethyl-2-hepten-4-yn-1-yl]-N,4-dimethyl-1-naphthalenemethanamine (Terbinafine EP Impurity D; Terbinafine USP Related Compound D; Terbinafine BP Impurity D) is an impurity of Terbinafine (T107500), an orally active, antimycotic allylamine and a specific inhibitor of squalene epoxidase.<br>References Petranyi, G., et al.: Science, 224, 1239 (1984); Ryder, N.S., et al.: Antimicrob. Agents Chemother., 27, 252 (1985); Evans, E.G.V., et al.: Br. Med. J., 318, 1031 (1999);<br></p>

<p>Applications Cefmetazole Lactone is an impurity of cefmetazole (C242850), which is a semi-synthetic antibiotic derived from Cephamycin. Antibacterial.<br>References Nakao, H., et al.: J. Antibiot., 29, 554 (1976), Iwata, M., et al.: Jpn. J. Exp. Med., 48, 401 (1978), Shindo, H., et al.: Chemoterapy, 27, 64 (1979), Nishida, M., et al.: J. Antibiot., 32, 1319 (1979),<br></p>

<p>Applications N-Acetyl Cefixime is the N-acetylated analogue and impurity of the third generation cephalosporin antibiotic, Cefixime (C242800).<br></p>

<p>Impurity Ciprofloxacin Impurity E<br>Applications Ciprofloxacin impurity. Ciprofloxacin Impurity E<br>References Borner, K, et al.: J. Clin. Chem. Clin. Biochem., 24, 325 (1986), Lacroix, P., et al.: J. Pharm. Biomed. Anal., 14, 641 (1996), Barron, D., et al.: Anal. Chim. Acta, 415, 83 (2000,<br></p>

<p>Stability Unstable in Solution<br>Applications Cefathiamidine is an antibacterial agent that exhibits a broad spectrum of bactericidal activity against gram-positive bacteria.<br>References Chen, H.Y., et al.: J. Antimicrob. Chemother., 12, 19 (1983); Philpott-Howard, J., et al.: Scand. J. Infect. Dis. Suppl., 39, 109 (1983); Chen, H.Y., et al.: J. Med. Microbiol., 23, 141 (1987);<br></p>

<p>Impurity Tacrolimus Methylacryl Aldehyde (USP)<br>Applications Tacrolimus Methyl Acryl Aldehyde is the degradation product of Tacrolimus (F370000), a novel macrocyclic lactone isolated from Streptomyces tsukubaensis, having immunosuppressant activity.<br>References Asano, K., et al.: In Vivo, 10, 537 (1996), McCall, E., et al.: Circ. Res., 79, 1110 (1996), Raufman, J.P., et al.: J. Biol. Chem., 271, 19877 (1996), Rokaw, M.D., et al.: Am. J. Physiol., 271, C194 (1996), Knoll, G.A., and Bell, R.C.: Brit. Med. J., 318, 1104 (1999),<br></p>

<p>Applications 2,3,4,5-Tetrafluorobenzoic Acid is used in the synthesis of diterpenoid analogs as antitumor compounds. Also used in the synthesis of novel quinoline lactones.<br>References Li, D. et al.: Eur. J. Med. Chem., 64, 215 (2013); Zheng, H. et al.: Lett. Org. Chem., 10, 252 (2013);<br></p>

<p>Applications Amoxicillin sodium (Amox) (cas# 34642-77-8) is a useful research chemical.<br></p>

<p>Applications Protected Penicillamin.<br>References Klingstroem, J., et al.: Eur. J. Immunol., 36, 2649 (2006), Atyabi, F., et al.: J. Nanosci. Nanotechnol., 9, 4593 (2009), Yip, K., et al.: Brit. J. Pharmacol., 156, 1279 (2009),<br></p>

<p>Applications Amino(3-​chlorophenyl)​acetic Acid functions as intermediate useful in the preparation of synthetic penicillins, also used in the structure-activity relationship examination of several drugs containing the benzyl moiety, their roles in biochemical and pharmacological processes.<br>References Hansch, C., et al.: J. Med. Chem., 13, 957 (1970); Holdrege, C. T., et al.: Can. (1975), CA 966853 A2 19750429;<br></p>

<p>Applications Ixabepilone is an anti-tumor agent used in the treatment of patients suffering from solid tumors, such as metastatic breast cancer.<br>References Duska, L. et al.: Gynecol. Oncol., 135, 44 (2014); Deeken, J. et al.: Cancer Chemother. Pharmacol., 73, 1071 (2014);<br></p>

<p>Applications Kanamycin A (K137500) derivative.<br></p>

<p>Impurity Cefixime EP Impurity F<br>Applications Cefixime Ethyl Ester is an ester impurity of the third generation cephalosporin antibiotic, Cefixime (C242800).<br>References Bian, L. et al.: Yao. Fen. Zaz., 30, 872 (2010);<br></p>

<p>Applications Pseudoerythromycin A Hemiketal is an impurity of Erythromycin (E649950), an antibiotic.This compound is a contaminant of emerging concern (CECs).<br>References Koch, W.L., et al.: Anal. Profiles Drug Subs., 8, 157 (1979),<br></p>

<p>Applications Intermediate in the production of labelled Posaconazole.<br></p>

<p>Applications The Δ2-isomer of Cefotean (C242970). It is useful as intermediate in the preparation of cephalesorin compounds.<br>References Sugioka, T., et al.: Chem. Pharm. Bull., 38, 1998 (1990),<br></p>

<p>Applications A semi-synthetic cephalosporin antibiotic. Antibacterial.<br>References Goodhart, F., et al.: J. Pharamac. Sci., 62, 133 (1973), Maier, H., et al.: Arzneim.-Forsch., 42, 980 (1992),<br></p>

<p>Applications Erythrolosamine is a derivative of Erythromycin A Oxime (E650010), which displays no antibacterial activity. It is a potent precursor of ketolide antibiotics.<br>References Basnet, D. et al.: J. Biotech., 135, 92 (2008); LeMahieu, R. et al.: J. Med. Chem., 17, 953 (1974)<br></p>

<p>Applications 3-Methyl-2,5-bis-(2-hydroxyethyl)pyrazine is a degradation product of Clavulanic Acid (C563750), a β-lactamase inhibitor, typically added to amoxicillin to increase its effectiveness.<br>References Reading, C. and Cole, M.: Antimicrob. Ag. Chemother., 11, 852 (1977), Ball, A.P., et al.: Lancet, 1, 620 (1980), Brogden, R.N., et al. Drugs, 22, 337 (1981); Haginaka, J. et al.: Chem. Pharm. Bull., 33, 218 (1985);<br></p>

<p>Stability Hygroscopic<br>Applications Clindamycin (C580000) impurity in bulk drug.<br>References Zhou, H., et al.: J. Pharma. Biomed. Anal., 41, 1116 (2006),<br></p>

<p>Impurity Cefpodoxime Proxetil EP Impurity F<br>Applications 2-Formyl-cefpodoxime Proxetil (Cefpodoxime Proxetil EP Impurity F) is a useful intermediate to prepare cefpodoxime proxetil (C243860), a cephalosporin antibiotic used to treat bacterial infections.<br>References Fujimoto, K., et al.: J. Antibiot., 40, 370 (1987); Utsui, Y., et al.: Antimicrob. Agents Chemother., 31, 1085 (1987)<br></p>

<p>Impurity Linezolid USP Related Compound B<br>Applications Deacetyl Linezolid Thioacetamide is an impurity of Linezolid (L466500), an oxazolidinone antimicrobial which inhibits bacterial mRNA translation. Linezolid USP Related Compound B.<br>References Brickner, S.J., et al.: J. Med. Chem., 39, 673 (1996); Ford, C.W., et al.: Antimicrob. Agents Chemother., 40, 1508 (1996); Rybak, M.J., et al.: Pharmacotherapy, 18, 456 (1998); Stevens, D.L., et al.: Clin. Infect. Dis., 34, 1481 (2002);<br></p>

<p>Applications Found in the metabolic decomposition of Chloramphenicol by Alcaligenes faecalis. A Chloramphenicol (C325030) derivative.<br>References Obojska, K. et al.: Microbiologia Generalis 3, 63 (1971)<br></p>

<p>Applications (R)-(-)-2-(2,5-Dihydrophenyl)glycine is a cycohexadiene based amino acid used in the preparation of cephalosporin-type antibiotics such as Cephradine (C261800).<br>References Kemperman, G.J. et al.: Eur. J. Org. Chem., 10, 1817 (2001); Takano, S. et al.: Yakug. Zas., 102, 617 (1982);<br></p>

<p>Applications The epothilones are a novel class of antineoplastic agents possessing antitubulin activity. Epothilone A, B isolated from Sorangium cellulosum was associated with cell cycle arrest at G2/M transition and apoptosis that was resisted with overexpression of β-tubulin and P-glycoprotein in human bladder carcinoma cell.<br>References Bollag, D.M., et al.: Cancer. Res., 55, 2325 (1995), Hardt, I.H., et al.: J. Nat. Prod., 64, 847 (2001), Gerth, K., et al.: J. Antibiot., 55, 41, 45 (2002)<br></p>

<p>Applications Selamectin is a topical parasiticide and also used as a veterinary antihelminithic agent on animals.<br>References Eshar, D., et al.: J. Am. Veterin. Med. Association., 241, 1056 (2012); Geis-Asteggiante, L., et al.: J. Chromatograph., 1258, 43 (2012);<br></p>

<p>Applications Erythromycin (E649950) derivative.<br></p>

<p>Stability Hygroscopic<br>Applications Piperacilloic Acid-Piperacillin Dimer Disodium Salt is Piperacillin (P479950) impurity and can be obtained from it. Piperacillin (P479950) is broad spectrum semi-synthetic antibiotic related to Penicillin. Antibacterial.<br>References Takai, A., et al.: Chemotherapy, 25, 816 (1977); Bodey, G.P., et al.: Antimicrob. Agents Chemother., 14, 78 (1978); Kuck, N.A., et al.: J. Antibiot., 31, 1175 (1978);<br></p>

<p>Applications A labelled impurity of Gatifloxacin.<br>References Naber, C., et al.: Antimicrob. Agents Chemother., 45, 293 (2001), Herzler, M., et al.: J. Anal. Toxicol., 27, 233(2003), Pragst, F., et al.: Clin. Chem. Lab. Med., 42, 1325 (2004),<br></p>

<p>Applications The minor glucuronide metabolite of Chloramphenicol (C325030).<br>References Simons, P., et al.: Xenobiotica, 22, 1267 (1992), Kaji, H., et al.: Drug Metab. Dispos., 33, 60 (2005),<br></p>

<p>Impurity Tiamulin Hydrogen Fumarate Impurity C<br>Applications Reagent used in the addition of Thiobistriethylamine.<br>References Evers, M., et al.: Bioorg. Med. Chem. Lett., 13, 4415 (2003),<br></p>

<p>Applications 3,6-Methylene-2,5-piperazinedione is an impurity of Cycloserine (C988800), an antibacterial agent.<br>References Ajo, D., et al.: J. Molec. Structure.,141, 415 (1986); Gentry-Weeks, C., et al.: J. Biol. Chem., 268, 7298 (1993); Alexander, F., et al.: Eur. J. Biochem., 219, 953 (1994); Auger, S., et al.: Biochimie, 87, 231 (2005)<br></p>

<p>Applications An antibiotic derived from Tetracycline. Studies have shown that this derivative can have a 250-fold higher toxicity depending on the system under study. This compound is a contaminant of emerging concern (CECs).<br>References Simmons, D., et al.: J. Pharm. Sci., 55, 1313 (1966), Paemen, L., et al.: Biochem. Pharmacol., 52, 105 (1996),<br></p>

<p>Applications 3-(2-Chloro-6-fluorophenyl)-5-methylisoxazole-4-carboxylic Acid-13C4 Ethyl Ester is an isotope labelled derivative in the synthesis of Flucloxacillin (F419200), a new semisynthetic penicillin with broad spectrum of antibacterial activity.<br>References Macsari, I., et al.: Bioorg. Med. Chem. Lett., 21, 3871 (2011); Cui, Y., et al.: Curr. Sci., 89, 531 (2005);<br></p>

<p>Applications Linezolid Dimer is an impurity of the antibacterial agent Linezolid (L466500).<br></p>

<p>Applications Mitomycin (M371900) impurity.<br>References Siegel, D., et al.: Biochemistry, 31, 7879 (1992), Kontou, M., et al.: Oncogene, 21, 2406 (2002),<br></p>

<p>Impurity Clarithromycin Impurity O EP<br>Stability Hygroscopic<br>Applications Clarithromycin (9Z)-O-Methyloxime is an impurity of Clarithromycin (C559750); a semi-synthetic macrolide antibiotic and derivative of Erythromycin (E650000).<br>References Morgan, D., et al.: J. Chromatogr., 502, 351 (1990); Benson, C., et al.: Eur. J. Clin. Microbiol., 6, 173 (1987); Boyanova, L., et al.: J. Med. Microb., 61, 85 (2012); Lin, Z., et al.: Toxicol. Sci., 126, 114 (2012)<br></p>

<p>Impurity Terbinafine EP Impurity B<br>Applications cis-Terbinafine Hydrochloride (Terbinafine EP Impurity B) is an impurity in the production of Terbinafine hydrochloride.<br> Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package<br>References Petranyi, G., et al.: Science, 224, 1239 (1984), Stutz, A., et al.: J. Med. Chem., 27, 1539 (1984),<br></p>

<p>Applications N-t-Butyl Linezolid is a derivative of Linezolid (L466500), prototype of the oxazolidinone antimicrobials; inhibits bacterial mRNA translation.<br>References Brickner, S.J., et al.: J. Med. Chem., 39, 673 (1996), Ford, C.W., et al.: Antimicrob. Agents Chemother., 40, 1508 (1996), Rybak, M.J., et al.: Pharmacotherapy, 18, 456 (1998), Stevens, D.L., et al.: Clin. Infect. Dis., 34, 1481 (2002),<br></p>

<p>Applications (6R,7S)-Cefoperazone Sodium Salt is the enantiomer of Cefoperazone (C242900) as an impurity.<br>References Fabre, H., et al.: J. Pharm. Sci., 73, 611 (1984), Strasters, J., et al.: Anal. Chem., 63, 2503 (1991), Chen, Z., et al.: World Notes Antibiot., 25, 249 (2004),<br></p>

<p>Applications Intermediate in the preparation of Cycloserine (C988800).<br></p>

<p>Applications 5-Bromo-2-(1-methyl-1H-tetrazol-5-yl)pyridine is an intermediate in the synthesis of Tedizolid (T013750), an known oral and intravenous antibiotic.<br>References Xin, Q. S., et al.: J. Med. Chem., 54, 7493 (2011);<br></p>

<p>Stability Light Sensitive<br>Applications Rifabutin Impurity C is an impurity of Rifabutin (R505000), a semisynthetic derivative of Rifamycin S that inhibits nucleic acid synthesis.<br>References O’Brien, R.J., et al.: Infect. Dis., 9, 519 (1987), Anand, R., et al.: Antimicrob. AG. Chemother., 32 (684 (1988), Skinner, M.H., et al.: Antimicrob. Agent Chemother., 33, 1237 (1989),<br></p>

<p>Impurity Clarithromycin EP Impurity E<br>Applications 6,11-Di-O-methyl Erythromycin (Clarithromycin EP Impurity E) is a Di-O-alkyl Erythromycin (E649950) is an impurity of Clarithromycin (C559750). Clarithromycin impurity E per British Pharmacopoeia.<br>References Morimoto, S. et al.: J. Antibiot., 43, 286 (1990); Kohno, Y. et al.: J. Antimicrob. Chemother., 26, 503 (1990);<br></p>

<p>Applications E-Ceftazidime is an impurity of Ceftazidime Pentahydrate (C244100); which is a third generation cephalosporin antibiotic.<br>References Brodie, A., et al.: Antimicrob. Agents Chemother., 17, 876 (1980); Richards, D.M., et al.: Drugs, 29, 105 (1985); Abounassif, M.A., et al.: Anal. Profiles Drug Subs., 19, 95 (1990)<br></p>

<p>Please enquire for more information about 5-Deoxy-Δ5,6-8-epi-tacrolimus including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>7 S-Cefdinir is an oral cephalosporin antibiotic that binds to penicillin-binding proteins in the bacterial cell wall by competitive inhibition. This binding prevents the formation of an antibiotic-inhibitor complex with transpeptidase and transpeptidase, which are enzymes involved in peptidoglycan synthesis. 7 S-Cefdinir also inhibits pentapeptide cross-linking, which is necessary for the formation of peptidoglycan chains. 7 S-Cefdinir has bactericidal activity against a wide range of bacteria and acts as an antibacterial agent. It is active against erythromycin-resistant strains of Streptococcus pneumoniae and Mycoplasma pneumoniae, but not against methicillin-resistant Staphylococcus aureus (MRSA).</p>

<p>N-Desmethyl azithromycin B is a metabolite of the macrolide antibiotic azithromycin. It is an impurity in the drug product, and is present as an analytical standard for HPLC. N-Desmethyl azithromycin B can be found in the urine of patients taking azithromycin, but at much lower concentrations than the parent drug. This impurity is not toxicologically relevant, but may interfere with some analytical methods.</p>

<p>4-Epiminocycline is a pharmaceutical preparation that belongs to the class of antibiotics. It is a drug substance that is used in the manufacture of other drugs and as an individual drug for the treatment of various skin conditions and for the prevention of malaria. 4-Epiminocycline has been shown to be effective against bacteria by binding to DNA, preventing transcription and replication. The drug binds to plasma proteins and erythrocytes with high affinity, but it does not bind well to intestinal cells or lung tissue. 4-Epiminocycline has been shown to be effective against Mycobacterium tuberculosis, Mycobacterium avium complex, Staphylococcus aureus, Streptococcus pyogenes, and Enterococcus faecalis. This antibiotic also prevents the formation of biofilms by these bacteria.</p>

<p>Cefixime EP Impurity C disodium is an impurity in the drug Cefixime EP. It is a by-product of the synthesis process, which can be removed by a purification process. This product is an analytical standard and is used for qualitative analysis in HPLC. It is also used as a research and development standard for drug development. This product has been classified as a niche impurity since it only occurs at trace levels in the drug product, but it may have pharmacological relevance to some patients. This impurity can be synthesized from natural or synthetic sources and is available for custom synthesis to meet specific customer needs.</p>

<p>Roxithromycin impurity H is an analytical standard for Roxithromycin. It is a metabolite that has been identified in human urine and bile samples as well as in rat plasma following oral administration of Roxithromycin. It is also a byproduct of the synthesis of Roxithromycin, which can be eliminated through purification steps. This compound has not yet been evaluated in humans or animals, but it may cause adverse effects such as gastrointestinal disturbances, headache, or hepatotoxicity.</p>

<p>Micafungin Metabolite M1 is a metabolite of Micafungin. It is an impurity in the drug product and is not active. Micafungin Metabolite M1 has been proposed as a pharmacopoeia reference standard for HPLC quantification of Micafungin.</p>

<p>Please enquire for more information about 3-HABA kanamycin A sulfate including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>

<p>Cefixime is a broad-spectrum oral antibiotic used to treat bacterial infections, including respiratory tract and ear infections. Cefixime is the prodrug of cefixime acid, which is hydrolyzed in vivo to cefixime. This impurity is an analytical standard that can be used for research and development, high purity drug product, API impurity, HPLC standard and niche drugs. It can also be used as a metabolite and an impurity standard. The CAS number for this compound is 1335475-08-5. This chemical has natural or synthetic origins but is not specified.</p>

<p>Azithromycin N-ethyl is a drug development and analytical impurity standard. It is used as an analytical reference material for high-performance liquid chromatography (HPLC) and nuclear magnetic resonance spectroscopy (NMR). Azithromycin N-ethyl has been shown to be a metabolite of azithromycin, which is a niche antibiotic with broad activity against Gram-positive bacteria. This product can also be synthesized from erythromycins using methylation. CAS Number: 92594-45-1</p>

<p>(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]methyl} acetamide dihydrochloride is a drug product with purity of &gt;80%. It is a mixture of diastereomers. The impurities are not detected by HPLC. This compound is used in the development of drugs. Its metabolite is also available to purchase.</p>

<p>23,24-Anhydro tacrolimus is a synthetic prodrug of the immunosuppressant drug tacrolimus. It has the same pharmacological effects as the parent compound and can be used in its place to avoid adverse reactions. The metabolite of 23,24-anhydro tacrolimus is a natural metabolite of tacrolimus and has been synthesized for research purposes or for use as an analytical standard. 23,24-Anhydro tacrolimus is not an impurity standard, but rather a niche product that is not commercially available from suppliers.</p>

<p>(5S)-5-(Aminomethyl)-3-[3-fluoro-4-(4-morpholinyl)phenyl]-1,3-oxazolidin-2-one is a molecule with a broad spectrum of antimicrobial activity. It is a potent inhibitor of the enzyme metallo-β-lactamase, which is found in Streptococcus faecalis and other bacteria. This molecule also has antibacterial activity against Streptococcus pyogenes and Staphylococcus aureus. (5S)-5-(Aminomethyl)-3-[3-fluoro-4-(4-morpholinyl)phenyl]-1,3-oxazolidin-2 -one is an amide with mass spectrometric and spectroscopic properties that can be used as analytical methods to identify it in biological samples.</p>

<p>Impurity G is an impurity found in the drug Iohexol. It is a synthetic, amide, propylamine, diacetate and methyl anthranilate. Impurity G has been shown to be a catalyst for the production of iodinated contrast media with high yield. This can be used to make the drug Moxifloxacin hydrochloride, which is used to treat bacterial infections such as pneumonia and bronchitis caused by Legionella pneumophila or Mycoplasma pneumoniae. The chemical compound moxifloxacin has anti-inflammatory properties that are due to its ability to inhibit prostaglandin synthesis.</p>

<p>Please enquire for more information about L-Piperacillin including the price, delivery time and more detailed product information at the technical inquiry form on this page</p>