Toxicología

<p>Applications 2-(2-Formamido-4-thiazolyl)glyoxylic Acid is used as a reagent in the synthesis of cephalosporins which are a class of beta-lactam antibiotics which are active against gram-positive and potentially against gram-negative bacteria.<br>References Takasugi, H., et al.: J. Antibiot., 36, 846 (1983); Choi, K., et al.: J. Antibiot., 48, 1375 (1995);<br></p>

<p>Applications Digoxin-4’’’-O-tetra-O-acetyl β-D-Glucopyranoside is an intermediate in the synthesis of Digoxigenin Tetradigitoxoside (D446510), which is a digoxin (Dx) (D446575) impurity.<br>References Fujii, Y., et al.: Clin. Chem., 37, 476 (1991), Salphati, L., et al.: Xenobiotica, 29, 171 (1999), Song, S., et al.: Drug Metab. Dispos., 27, 689 (1999),<br></p>

<p>Applications Intermediate in the synthesis of a cholesterol absorption inhibitor.<br>References Kambara, T. et al.; J. Org. Chem. 64, 9282 (1999); Wu, G. et al.; J. Org. Chem. 62, 6412 (1997)<br></p>

<p>Applications Isotope labelled intermediate in the synthesis of the metabolites of Nitazoxanide (N490100), an anthelmintic (cestodes), antiprotozoal (cryptosporidium) agent.<br>References Honma, K., et al.: Chem. Pharm. Bull., 24, 394 (1976), Dubreuil, L., et al.: Antimicrob. Agents Chemother., 40, 2266 (1996), Stockis, A., et al.: Int. J. Clin. Pharmacol. Ther., 34, 349 (1996),<br></p>

<p>Applications Chlordene is an organochlorine pesticide/insecticide used in the protection of crops from pests.<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 Shoeib, M. et al.: Env. Toxicol. Chem., 21, 984 (2002); Parlar, H. et al.: J. Agric. Food. Chem., 27, 278 (1979);<br></p>

<p>Stability Hygroscopic<br>Applications Isotope labelled analogue of Phenethicillin is a semisynthetic penicillin based β-lactam antibiotic and are used in the treatment of bacterial infections caused by susceptible, usually Gram-positive bacteria.<br>References Lucien, C., et al.: Can. med. Assoc. J., 84, 535 (1961); Timmers, G.J., et al.: Clin. Microbiol. Infect., 13, 497 (2007);<br></p>

<p>Applications 8-Epitacrolimus is a new l-pipecolic acid macrolide lactone, an important immunosuppressive drug that blocks T cell proliferation in vitro by inhibiting the generation of several lymphokines, especially IL-2. 8-Epitacrolimus is also an Epimer of Tacrolimus (F370000).<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 Skytte, D.M., et al.: J. Nat. Prod.,73, 776 (2010); 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 (2R,4S)-2-[(2S,5S)-5-(4-Hydroxyphenyl)-3,6-dioxo-2-piperazinyl]-5,5-dimethyl-4-thiazolidinecarboxylic Acid is an impurity in the synthesis of N-(Penicillan-6-yl) Open Ring Amoxicillinamide Disodium Salt , whch is an impurity of Amoxicillin (A634235); a semi-synthetic antibiotic related to Penicillin (P233500). Antibacterial.<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 (R)-(-)-2,2-Dimethyl-1,3-dioxolan-4-ylmethyl p-Toluenesulfonate is a chiral building block. It is used to prepare the antifungal agent ketoconazole. It is also used to prepare acyclic Nucleotide Analogs Derived from 8-Azapurines with antiviral activities.<br>References Rotstein, D., et al.: J. Med. Chem., 35, 2818 (1992); Holy, A., et al.: J. Med. Chem., 39, 4073 (1996)<br></p>

<p>Applications A nitropyridinol derivative as herbicides.<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 Buncel, E., et al.: Bioorg. Chem., 11, 43 (1982), Delarge, J., et al.: Eur. J. Med. Chem., 19, 559 (1984),<br></p>

<p>Applications Intermediate in the preparation of ribose sugar derivatives.<br></p>

<p>Applications Tolbutamide derivative.<br>References Relling, et al.: J. Pharmacol. Exp. Ther., 252, 442 (1990), Parent, et al.: J. Pharmacol. Exp. Ther., 261, 780 (1992), Ho, et al.: Life Sci., 52, 21 (1993),<br></p>

<p>Applications Δ2-Cefuroxime Methyl Ester is a potentially related compound in cephalosporin antibacterial compounds.<br>References Miyouchi, M., et al.: J. Chem. Pharm. Bull., 38, 1906 (1990), Sugioka, T., et al.: Chem. Pharm. Bull., 38, 1998 (1990),<br></p>

<p>Applications A labelled, protected Cortisol metabolite.<br>References Derks, H., et al.: Steroids, 31, 9 (1978),<br></p>

<p>Applications 4-Chloro-5-sulfamoylphthalimide is an intermediate in the synthesis of Chlorexolone (C327080), a sulfonamide based antibiotic.<br></p>

<p>Applications (3β,5α)-3-[[(1,1-Dimethylethyl)diphenylsilyl]oxy]-cholest-7-en-24-one is an intermediate in the synthesis of Episterol which is a compound influencing ergosterol biosynthesis, and thus acting as an antifungal agent.<br>References Mallory, J. et al.: Pharmacol., 3, 179 (2012); Mueller, C. et al.: Steroids, 78, 483 (2013);<br></p>

<p>Applications Intermediate in the preparation of Simvastatin (S485000) analogs.<br></p>

<p>Applications (4S-cis)-4-(O-TBDMS-1-methylethyl)-2,2,5-trimethyl-1,3-dioxolane-4-carboxylic Acid is an intermediate in the synthesis of (+)-Echimidine N-Oxide, which is a hepatotoxic pyrrolizidine alkaloid. Different extracts and echimidine-N-oxide from Symphytum sylvaticum Boiss. Subsp. sepulcrale, has been shown to have Antifungal activity.<br>References Kartal, M., et al.: Turkish, J. Med. Sci., 31, 487 (2001); Cao, Y., J. Food Comp. Anal., 29, 106 (2013);<br></p>

<p>Applications 4-Chloro-5-fluoro-2-nitrobenzoic Acid Methyl Ester is an intermediate in the synthesis of Albaconazole (H761395), an antifungal agent as neuroprotectant.<br></p>

<p>Applications 3-[[(1,1-Dimethylethyl)diphenylsilyl]oxy] Ergosta-7,24(28)-diene is an intermediate in the synthesis of Episterol which is a compound influencing ergosterol biosynthesis, and thus acting as an antifungal agent.<br>References Mallory, J. et al.: Pharmacol., 3, 179 (2012); Mueller, C. et al.: Steroids, 78, 483 (2013);<br></p>

<p>Applications ((2S,4R)-2-(Chloromethyl)-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl)methyl 4-Methylbenzenesulfonate is an intermediate in the synthesis of Itraconazole (I937500), an orally active antimycotic structurally related to Ketoconazole. Antifungal.<br>References Heykants, J., et al.: Mycoses, 32, Suppl 1, 67 (1989), Sugar, A.M.,et al.: Curr. Clin. Top. Infect. Dis., 13, 74 (1993)<br></p>

<p>Applications N-(Chloromethyl)phthalimide is used in experimental determination of phosmet by high performance liquid chromatography. Phosmet is a phthalimide derived, non-systemic, organophosphate insecticide used on plants and animals.<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 Dulak, K., et al.: J. Chromatogr., 396, 433 (1987)<br></p>

<p>Applications N-[[P(S),2'R]-2'-deoxy-3'-O-[(1,1-dimethylethyl)dimethylsilyl]-2'-fluoro-2'-methyl-P-phenyl-5'-uridylyl]-L-alanine 1-Methylethyl Ester is an intermediate in the synthesis of Sofosbuvir (R)-Phosphate (S675615), which is an impurity of PSI-7977 (P839640), a prodrug that is metabolized to the active antiviral agent 2'-deoxy-2'-α-fluoro-β-C-methyluridine-5'-monophosphate and is currently being investigated in phase 3 clinical trials for the treatment of hepatitis C. Studies have profiled PSI-7977 as a nucleotide inhibitor of hepatitis C virus, exerting selective inhibitory effects towards HCV NS5B polymerase.<br>References Lam, A.M.,et al.: Antimicrob. Agents. Chemotherapy., 56, 3359 (2012); Lam, A.M., et al.: J. Virol., 85, 12334 (2011); Sofia, M.J., et al.: J. Medn. Chem., 53, 7202 (2010)<br></p>

<p>Applications Racemic Methotrexate (M260675), a folic acid antagonist. Used as a antineoplastic and antirheumatic.<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 Abraham, A., et al.: Cellular. Pharmacol., 3, 29 (1996); Freeman, M.V., J. Pharmacol. Exp. Ther., 122, 154 (1958), Weinblass, M.E., et al.: N. Engl. J. Med., 312, 818 (1985),<br></p>

<p>Applications Intermediate in the preparation of antifungal agents.<br>References Saksena, A., et al.: Bioorg. Med. Chem. Lett., 4, 2023 (1994),<br></p>

<p>Applications A sulfometabolite of Moxifloxacin (M745000).<br>References Dalhoff, A., et al.: Drugs, 58, 239 (1999), Ahmed, S., et al.: J. Pharm. Pharmacol., 60, 55 (2008),<br></p>

<p>Applications Clindamycin B (C580040) derivative.<br></p>

<p>Applications rac-cis-Permethrinic acid is a potent insecticide used in the agricultural industry to eliminate unwanted pests from crops. rac-cis-Permethrinic acid is also metabolite of pyrethroid compounds, a group of pesticides that are relatively low toxicity (to organisms that are not intended to be targeted) and biodegradable.<br>References Kale, M., et al.: Toxicol. Lett., 105, 197 (1999); Leszczynski, J., et al.: J. Am. Chem. Soc., 115, 5891 (1993); Sodurlund, D. &amp; Bloomquist, J.: Ann. Rev. Entomol., 34, 77 (1989)<br></p>

<p>Applications Diacetyl (6-Chloro 7-Piperazinyl 1-Ethyl-1,4-dihydro-4-oxo-3-quinolinecarboxy Borate) is an intermediate in the synthesis of Defluoro-6-chloro Norfloxacin Hydrochloride (D228535). Defluoro-6-chloro Norfloxacin hydrochloride is impurity F of Norfloxacin (N681000), which is a pefloxacin derivative that acts as a fluorinated quinolone antibacterial.<br>References Koga, H., et al.: J. Med. Chem., 23, 1358 (1980); Hirai, K., et al.: Antimicrob. Agents Chemother., 19, 188 (1981); Holmes, B., et al.: Drugs, 30, 482 (1985)<br></p>

<p>Applications 20β-Dihydrocortisol 21-Acetate is an intermediate in the synthesis of 20β-Dihydrocortisol (D448740), which could be used as a potential non invasive diagnostic test of transmissible spongiform encephalopaties. 20β-Dihydrocortisol is a metabolite of Cortisol (H714615), a steroid hormone, more specifically a glucocorticoid, produced by the zona fasciculata of the adrenal gland. Cortisol is released in response to stress and a low level of blood glucocorticoids. Its primary functions are to increase blood sugar through gluconeogenesis; suppress the immune system; and aid in fat, protein and carbohydrate metabolism.<br>References Schelcher, F., et. al.: Endocrinology, 140, 2422 (1999); Phillipov, G., et. al.: J. Clin. Endocr. Metab., 81, 3855 (1996); Vigore, L., et al.: Cancer Ther., 6, 699 (2008); Puurunen, J., et al.: J. Clin. Endocrinol. Metab., 94, 1973 (2009); Lemos, D., et al.: J. Endocrinol., 201, 275 (2009); Chen, S., et al.: Am. J. Physiol., 296 (2009)<br></p>

<p>Applications 1-[5-Chloro-2-(2,4-dichlorophenoxy-13C6)phenyl]ethanone is an intermediate in the synthesis of Triclosan-13C6 (T774253). Isotope labelled Triclosan is used as bactericide and preservative for cosmetic and detergent compositions (1). Broadly used as an antiseptic and disinfectant (2). This compound is a contaminant of emerging concern (CECs). Drinking water contaminant candidate list 3 (CCL 3) compound as per United States Environmental Protection Agency (EPA). Environmental contaminants; Food contaminants.<br></p>

<p>Applications Trimazosin is useful in therapy as potent antihypertensive agents.<br>References Andrews, C., et al.: Pharm. Res., 17, 639 (2000), Davis, A., et al.: Curr. Opin. Chem. Biol., 8, 378 (2004), Votano, J., et al.: J. Med. Chem., 49, 7169 (2006),<br></p>

<p>Impurity Ethinylestradiol EP Impurity H<br>Applications A degradation product of Ethynyl Estradiol (EE), (E685100).<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></p>

<p>Applications 6,8-Difluoro-1,4-dihydro-1-(N-methylformamido)-7-(4-methyl-1-piperazinyl)-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester is an intermediate in the synthesis of Marbofloxacin (M197000), a fluorinated quinolone antibacterial agent.<br>References Gruet, P., et al.: Vet. Rec., 140, 199 (1977), Lefebvre, H.P., et al.: J. Vet. Pharmacol. Ther., 21, 453 (1998),<br></p>

<p>Applications Protected Estradiol.<br>References Lokind, K., et al.: Int. J. Pharm., 127, 155 (1996), Bubert, C., et al.: J. Med. Chem., 50, 4431 (2007), Prokai-Tatrai, K., et al.: Steroids, 73, 280 (2008),<br></p>

<p>Applications tert-Butyl ((1S)-1-Hydroxy-1(isobutylamino)-3-phenylpropan-2-yl)carbamate is an protected intermediate in the synthesis of Darunavir (D193500), a second generation HIV-1-protease inhibitor.<br></p>

<p>Applications 1-Ethoxyethanimine-D3 Hydrochloride is an intermediate in the synthesis of Secnidazole-d3 (S225003), which is a labelled Secnidazole (S225000). Analog of Metronidazole. Antiamebic. Antiprotozoal (Trichomonas).<br>References Cosar, C., et al.: Arzneim.-Forsch., 16, 23 (1966), Videau, D., et al.: Br. J. Vener. Dis., 54, 77 (1978), Symonds, J., et al.: J. Antimicrob. Chemother., 5, 484 (1979),<br></p>

<p>Applications A highly reactive thiol-specific spin-label. A specific conformational probe of thiol site structure by virtue of its minimal rotational freedom and distance from the covalent disulfide linkage to the macromolecule under study.<br></p>

<p>Applications Clindamycin Cyclomonophosphate is a by-product during the synthesis of Clindamycin Phosphatidyl Anhydride (C580110), an impurity of Clindamycin (C580000), which is an antibiotic prepared from Lincomycin (L466200), used to treat various infections.<br>References Birkenmeyer, R.D., et al.: J. Med. Chem., 13, 616 (1970); Oesterling, et al.: J. Pharm. Sci., 59, 63 (1970); Gray, J.E., et al.: Toxicol. Appl. Pharmacol., 21, 516 (1972); Brown, L.W., et al.: Anal. Profiles Drug Subs., 10, 75 (1981)<br></p>

<p>Applications 2-Chloro-5-(trifluoromethyl)pyridine is a starting material for the preparation of novel herbicide fluazifop-butyi. 2-Chloro-5-(trifluoromethyl)pyridine is a mutagenic compound.<br>References Lu, Y., et al.: Shijie Nongyao, 31, 32 (2009); Dearfield, K. L., et al.: Mutat. Res. Lett., 301, 57 (1993)<br></p>

<p>Applications 4-Chlororesorcinol-d3 is a labeled analogue of 4-Chlororesorcinol (C427755), which can be used as hair dye formulation, and in the synthesis of series of six coumarin compounds carrying halogen and trifluoromethyl, having antifungal activities.<br>References Hui-juan, Zh., et al.: Huanjing Yu Jiankang Zazhi, 27, 513 (2010); Hai-yun, Xh., et al.: Baoji Wenli Xueyuan Xuebao, Ziran Kexueban, 31, 12 (2011)<br></p>

<p>Applications ((2R,4R)-2-(Chloromethyl)-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl)methyl 4-Methylbenzenesulfonate is an intermediate in the synthesis of Itraconazole (I937500), an orally active antimycotic structurally related to Ketoconazole. Antifungal.<br>References Heykants, J., et al.: Mycoses, 32, Suppl 1, 67 (1989), Sugar, A.M.,et al.: Curr. Clin. Top. Infect. Dis., 13, 74 (1993)<br></p>

<p>Applications (E)-(5,6-Dihydro-1,4,2-dioxazin-3-yl)(2-hydroxyphenyl)methanone O-Methyloxime-d4 is an intermediate used in the synthesis of Fluoxastrobin-d4 (F596702), which is labelled Fluoxastrobin (F596700). Leaf-systemic broad-spectrum fungicide for use in cereal and food crops; member of methoxy-imiodihydro-dioxazines. Agricultural fungicide.<br>References Milus, E., et al.: Plant Dis., 78, 697 (1994), D'Mello, J., et al.: Eur. J. Plant Pathol., 104, 745 (1998), Domijan, A., et al.: Food Addit. Contam., 22, 677 (2005),<br></p>

<p>Applications Potassium cyanate is used as an inhibitor to prevent sickling of erythrocytes and has potential use as a treatment for sickle-cell anemia. Potassium cyanate is also used as a reagent to carbamylate proteins.<br>References Cerami, A. &amp; Manning, J.: Proc. Nat. Acad. Sci., 68, 1180 (1971); Rimon, S. &amp; Perlmann, G.: J. Biol. Chem., 243, 3566 (1968)<br></p>

<p>Applications A coordination compound for treatment of cervix cancer.<br>References Jiang, M., et al.: Methods Mol. Biol., 292, 401 (2005), Fujii, T., et al.: Int. J. Oncol., 29, 541 (2006), Niu, X., et al.: Int. J. Gynecol. Cancer, 16, 743 (2006),<br></p>

<p>Applications 6,7,8-Trifluoro-4-oxo-1-(1-oxopropan-2-yl)-1,4-dihydroquinoline-3-carboxylic Acid Ethyl Ester is an intermediate in the synthesis of Marbofloxacin (M197000), a fluorinated quinolone antibacterial agent.<br>References Gruet, P., et al.: Vet. Rec., 140, 199 (1977), Lefebvre, H.P., et al.: J. Vet. Pharmacol. Ther., 21, 453 (1998),<br></p>

<p>Applications 6,7-Dichloro-1-ethyl-1,4-dihydro-4-oxo-3-quinolinecarboxylic Acid Ethyl Ester is an intermediate in the synthesis of Defluoro-6-chloro Norfloxacin Hydrochloride (D228535). Defluoro-6-chloro Norfloxacin hydrochloride is impurity F of Norfloxacin (N681000), which is a pefloxacin derivative that acts as a fluorinated quinolone antibacterial.<br>References Koga, H., et al.: J. Med. Chem., 23, 1358 (1980); Hirai, K., et al.: Antimicrob. Agents Chemother., 19, 188 (1981); Holmes, B., et al.: Drugs, 30, 482 (1985)<br></p>

<p>Applications (1S,2R,6R)-6-Acetoxy-2-((bis(benzyloxy)phosphoryl)oxy)-4-(ethoxycarbonyl)cyclohex-3-en-1-yl benzoate is an intermediate in the synthesis of Shikimate-3-phosphate (S357026), an substrate for 5-Enolpyruvoyl-shikimate-3-phosphate synthase (EPSPS), the target for the board-spectrum herbicide N-(phosphonomethyl)glycine(glyphosate).<br>References Mooney, C.A., et al.: J. Med. Chem., 57, 3154 (2014);<br></p>

<p>Applications Octahydro-6-(phenylmethyl)-1H-Pyrrolo[3,4-b]pyridine-d4 is an isotope labelled intermediate in the synthesis of moxifoxacin (M745000), a fluorinated quinolone antibacterial.<br>References Somisetti, N. et al.: Org. Chem. Indian J., 7, 123 (2011);<br></p>

<p>Applications 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine N-β-D-Glucuronide Triacetate is an intermediate in the synthesis of 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine N-β-D-Glucuronide Sodium Salt which is a carcinogenic Sodium Salt, is a metabolite of 2-Amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) (A617000).<br>References Turesky, R., et al.: Mutat. Res., 506 187 (2002), Sugimura, T., et al.: Cancer Sci., 95, 290 (2004),<br></p>

<p>Applications 2,​4,​6-​Trifluorobenzenemethanamine-d4,15N Deuterium Chloride is an intermediate in the synthesis of Bictegravir-15N, d2 (B382096), which is the labeled version of Bictegravir, which is a novel, potent inhibitor of HIV-1 integrase with an IC50 of 7.5 nM.<br>References Tsiang M. et al.: Antimicrob Agents Chemother. 2016 Nov 21;60(12):7086-7097;<br></p>

<p>Applications 1-[2-(2,4-Difluorophenyl)-2,3-epoxypropyl]-1H-1,2,4-triazole is an epoxy impurity of the antifungal agent Fluconazole (F421000).<br>References Bourichi, H. et al.: STP Pharm. Prat., 18, 285 (2008); Dongre, V.G. et al.: J. Pharmac. Biomed. Anal., 42, 334 (2006)<br></p>

<p>Applications Benzyl 4-Nitrophenyl Carbonate is used as a reagent in the synthesis of Janus PEG-based dendrimers for use in combination therapy by controlled multi-drug loading and sequential release. Benzyl 4-Nitrophenyl Carbonate is also used as a reagent in the synthesis of Norfloxacin analogs which can exhibit antibacterial and antifungal activities under visible and UV light.<br>References Acton, A.L., et al.: Biomacromolecules, 14, 564 (2013); Bakhotmah, D.A., et al.: ISRN Org. Chem., 184754, 11 (2011)<br></p>

<p>Applications 4-O-(E)-Feruloylquinic Acid is a phenolic acid with potential antioxidant and antifungal activities. Secondary metabolite in the coffee brewing process.<br>References Matei, M. et al.: J. Agri. Food Chem., 60, 12105 (2012); Dokli, I. et al.: Tetrahedron Asymm., 24, 785 (2013);<br></p>

<p>Applications (E)-6-Amino-2-hexenoic Acid is used in the preparation of anti-collagenase active agent.<br></p>

<p>Applications A reactant used in the preparation of Liraglutide, a GLP-1R agonist.<br></p>

<p>Applications N-Propiononitrile-6-chloro-naphthalene Hydroxychloroquine is a useful research intermediate and an impurity of Hydroxychloroquine (B419750 ) which is an antimalarial; antirheumatic; lupus erythematosus suppressant. It is a COVID19-related research product<br>References Yarden, Y., et al.: Nature, 323, 226 (1986), Seifert, R., et al.: J. Biol. Chem., 264, 8771 (1989), Gahl, W., et al.: Mol. Genet. Metab., 76, 234 (2002), Card, J., et al.: Toxicol. Sci., 75, 169 (2003),<br></p>

<p>Applications A new substituted pyridazinone with tuberculostatic action.<br>References Wright, L., et al.: J. Antimicrob. Chemother., 12, 317 (1983), Choi, W., et al.: Anal. Biochem., 219, 368 (1994), Zacchino, S., et al.: J. Nat. Prod., 62, 1353 (1999), Urbina, J., et al.: Bioorg. Med. Chem., 8, 691 (2000),<br></p>

<p>Applications Labelled 3'-N-[[4-(acetylamino)phenyl]sulfonyl]-3'-N-demethyl Azithromycin, an impurity of Azithromycin (A927000).<br>References Debremaeker, D. et al.: Rap. Comm. Mass. Spec., 17, 342 (2003);<br></p>

<p>Applications 2-epi-Darunavir is a stereoisomer to Darunavir (D193500), a second generation HIV-1-protease inhibitor; structurally similar to amprenavir. Antiviral. It is a COVID19-related research product.<br>References Rao, R.N., et. al.: J. Sep. Sci., 35, 2671 (2012); Koh, Y., et al.: Antimicrob. Agents Chemother., 47, 3123 (2003); Arasteh, K., et al.: AIDS, 19, 943 (2005); Surleraux, D.L.N.G., et al.: J. Med. Chem., 48, 1813 (2005)<br></p>

<p>Applications The microsomal metabolite of Yangonin (Y100550).<br>References Johnson, B., et al.: Chem. Res. Toxicol., 16, 733 (2003), Mathews, J., et al.: Drug Metab. Dispos., 33, 1555 (2005), Zou, L., et al.: Planta Medica, 71, 142 (2005),<br></p>

<p>Stability Hygroscopic<br>Applications p-Nitrophenyl 6-Sulfo-2-acetamido-2-deoxy-β-D-glucopyranoside Sodium Salt is used in the design of N-acetyl-6-sulfo-β-D-glucosaminide-based inhibitors of influenza virus sialidase.<br>References Sasaki, K., et al.: Bioorg. Med. Chem., 12, 1367 (2004)<br></p>

<p>Applications N-[(1R,2R)-2-Hydroxy-3-[(2-methylpropyl)[(4-nitrophenyl)sulfonyl]amino]-1-(phenylmethyl)propyl]carbamic Acid 1,1-Dimethylethyl Ester is an intermediate in the synthesis of 1-epi-Darvunavir (D193505), a second generation HIV-1-protease inhibitor.<br></p>

<p>Applications 2-O-Methyl-β-D-N-acetylneuraminic Acid Sodium Salt, is a model compound for studies of binding of influenza virus hemaglutinin and metal ions.<br>References Sauter, N.K., et al.: Biochemistry, 28, 8388 (1989), Sharon, N., et al.: Science, 246, 227 (1989), Nagy, J.O., et al.: J. Med. Chem., 35 (23), (1992), Knibbs, R.N., et al.: J. Biol. Chem., 268 (25), 18524 (1993)<br></p>