Peptides et Protéines

Stability Temperature Sensitive
Applications (2S,4R)-Sacubitril is the enantiomer and an impurity of Sacubitril (S080895) which is an antihypertensive drug used in combination with valsartan.
References McMurray, J., et al.: N. Eng. J. Med., 371 (2014);

Applications A cyclosporine metabolite specifically inhibits growth of renal cells in culture.
References Schultz, J.C.; et al.: Biochem. Pharma., 42, 1403 (1991), Johnson, B., et al.: Drug Metab. Dispos., 34, 556 (2006), Westley, I.S., Drug Metab. Dispos., 36, 46 (2008).

Applications 3,3’,5-Triiodo-D-thyronine is a structural analogue o the thyroid homonef Thyroxine (T425600). 3,3’,5-Triiodo-D-thyronine has been shown to reduce cholesterol in blood serum.
References Mintz, D.O., et. al.: New Engl. J. Med., 266, 808 (1962)

Applications L-enantiomer of Threonine. An essential amino acid for human development; last of the common amino acids to be discovered. Identified in oat protein.
References LeMaster, D.M., et al.: J. Biol. Chem., 257, 1224 (1982), Ballevre, O., et al.: Anal. Biochem., 193, 212 (1991), Roufs, J.B., et al.: Med. Hypotheses, 34, 20 (1991), Blin, O., et al.: J. Neurol., 239, 79 (1992),

Applications Dl-valine

Applications Methionine sulfoximine inhibits both glutamine synthetase and g-glutamylcysteine synthetase. Working concentrations for inhibition of g-glutamylcysteine synthetase are 0.2-2.0 mM (52% inhibition occured at 100 mM).Methionine sulfoximine is also a toxic byproduct of nitrogen trichloride, a compound that was used to bleach unprocessed wheat flour prior to 1968. The compound has been investigated as a potential neurotoxin linked to diseases such as amyotrophic lateral sclerosis (ALS) and Parkinson’s disease.
References Griffith, O.W., and Meister, A.: J. Biol. Chem. 254, 7558 (1979), Willard-Mack, C.L., et al: Neuroscience, 71, 2, 589 (1996)

Applications Used for the synthesis of Bortezomib (B675700) from L-phenylalanine via dipeptidyl boronic acid ester intermediates.
References Zhu, Y., et al.: J. Med. Chem., 52, 4192 (2009),

Applications A sulfonate ester as potential genotoxic impurity in drug substances. It may exert genotoxic effects in bacterial and mammalian cell systems.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Eder, E., et al.: Xenobiotica, 12, 831 (1982), Li, W., et al.: J. Chromatogr., 1046, 297 (2004), Glowienke, S., et al.: Mutat. Res., 581, 23 (2005), Colon, I., et al.: J. Pharm. Biomed. Anal., 39, 477 (2005),

Applications Daptomycin is a Cyclic lipopeptide antibiotic derived from a fermentation product of Streptomyces roseosporus; disrupts plasma membrane function in gram-positive bacteria. Antibacterial.
References Allen, N.E., et al.: Antimicrob. Agents Chemother., 31, 1093 (1987), Tully, F.P., et al.: Expert Opin. Invest. Drugs, 8, 1223 (1999),

Applications A natural constituent of animal structural proteins such as collagen and elastin. Several microorganisms producing proline trans-4- and cis-3-hydroxylase were discovered and these enzymes were applied to the industrial production of trans-4- and cis-3-hydroxy-L-proline.
References Langmaier, F. et al.: Int. J. Cosm. Sci., 24, 273 (2002); Lawrence, C., et al.: Biochem. J., 313, 185 (1996); Mori, H., et al.: J. Bacteriol.; 179, 5677 (1997); Clifton, I., et al.: Eur. J. Biochem., 268, 6625 (2001);

Applications Vasopressin Acetic Acid Salt is an acidic salt of Vasopressin (V991530), an antidiurectic hormone.
References Tokushige, S., et al.: Internal Medicine, 55, 1199 (2016)

Applications (±)-Methionine is an essential amino acid involved in various biochemical processes in humans and mammals. Also in poultry meal as a source of nutrition.
References Martin-Venegas, R. et al.: Food Chem., 141, 1702 (2013); Austic, R. et al.: J. Agri. Food Chem., 61, 7341 (2013); Yan, L. et al.: J. Anim. Phys Anim Nutr., 97, 457 (2013);

Applications An obstetric drug used to control postpartum hemorrhaging.
References Sanz-Nebot, V., et al.: Anal. Bioanal. Chem., 377, 306 (2003), Gimpl, G., et al.: Eur. J. Pharmacol., 510, 9 (2005), Handler, J., et al.: Theriogenol., 66, 1397 (2006), Klenerova, V., et al.: J. Physiol. Pharmacol., 60, 57 (2009),

Applications An arginine-glycine-aspartate-mimetic, reversibly binds to platelets to reduce the risk of cardiac ischemic events.
References Pathak, A., et al.: Cardiovas. Diabetol., 7 (2008), Hantgan, R., et al.: Biochem., 48, 8355 (2009), Giugliano, R., et al.: New Eng. J. Med., 360, 2176 (2009),

Applications Carfilzomib (2R,4R)-Diol is a derivative of Carflizomib (C183460), a second-generation proteasome inhibitor that is used as a treatment in relapsed and refractory multiple myeloma.
References Fostier, K., et al.: Oncotargets. Therap., 5, 237 (2012); Geurink, P.P., et al.: J. Med. Chem., 56, 1262 (2013); McCormack, P.L., et al.: Drugs., 72, 2023 (2012);

Applications Carfilzomib is a second-generation proteasome inhibitor that is used as a treatment in relapsed and refractory multiple myeloma.
References Fostier, K., et al.: Oncotargets. Therap., 5, 237 (2012); Geurink, P.P., et al.: J. Med. Chem., 56, 1262 (2013); McCormack, P.L., et al.: Drugs., 72, 2023 (2012);

Applications Labelled Oxytocin. The principal uterus-contracting and lactation-stimulating hormone of the posterior pituitary gland.
References Pierce, et al.: J. Biol. Chem., 199, 929 (1952), Tuppy, et al.: Biochem. Biophys. Acta, 11, 449 (1953), Cash, et al.: J. Med. Pharm. Chem., 5, 413 (1962), Nachtmann, F., et al.: Anal. Profiles Drug Subs., 10, 563 (1981),

Applications Essential aminoacid for human development. Hepatoprotectant; antidote (acetominophen poisoning); urinary acidifier.
References Benevenga, N.J., et al.: J. Agric. Food Chem., 22, 2 (1974), Fleisher, L.D., et al.: Clin. Endocrinol. Metab., 3, 37 (1974), Meinnel, T., et al.: Biochimie, 75, 1061 (1993),

Applications (2R,4S)-4-Amino-5-(biphenyl-4-yl)-2-methylpentanoic Acid Ethyl Ester Hydrochloride is used as a reagent in the synthesis of LCZ696, an angiotensin II receptor and neprilysin receptor dual inhibitor. (2R,4S)-4-Amino-5-(biphenyl-4-yl)-2-methylpentanoic Acid Ethyl Ester Hydrochloride is also used as a reagent in the preparation of novel NEP inhibitor prodrugs for the treatment of hypertension and cardiovascular diseases.
References Liu, M., et al.: Faming Zhuanli Shenqing. CN 105168205 A 20151223. Dec 23, 2015; Wang, Z.: PCT Int. Appl. WO 2015154673 A1 20151015. Oct 15, 2015

Applications 3-Mercaptopropionic Acid (cas# 107-96-0) is a compound useful in organic synthesis.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Stability Hygroscopic
Applications γ-Cyclodextrin is used as nanomolecular encapsulation for drug delivery and pharmaceuticals. Used in the synthesis of unilamellar vesicles.
References Ikeda, A. et al.: Chem. Comm., 50, 1288 (2014); Gudmundsdottir, B. et al.: J. Ocular Pharm. Ther., 30, 35 (2014);

Applications Immunostimulant used in patients with cell-mediated immunodepression.
References Gu, C., et al.: Pharm. Res., 25, 979 (2008), Fliri, A., et al.: J. Med. Chem., 52, 8038 (2009), Giagulli, C., et al.: Int. Immunopharmacol., 9, 1366 (2009),

Applications Thyroxine 4-O-β-D-Glucuronide is a major metabolite and glucuronide conjugate of Thyroxine (T425600) formed via the glucuronidation of the phenyl hydroxyl group.
References Tong, Z. et al.: Drug Metab. Dispos., 35, 2203 (2007); West, C.D. et al.: J. Clin. INvest., 42, 1134 (1963);

Impurity Levothyroxine T4-Hydroxyacetic Acid; T4-Hydroacetic Acid (USP)
Stability Hygroscopic
Applications 3,5,3',5'-Tetraiodo Thyromandelic Acid (Levothyroxine T4-Hydroxyacetic Acid; T4-Hydroacetic Acid (USP)) is a thyroid hormone analogue, a Thyroxine (T425600) impurity.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Horst, C., et al.: Biochem. J., 261, 945 (1989), Kvetny, J., et al.: Horm. Metab. Res., 24, 322 (1992), Yamauchi, K., et al.: J. Biol. Chem., 274, 8460 (1999), Davis, P., et al.: J. Endocrinol. Invest., 25, 377 (2002),

Applications A major metabolite of Lopinavir (L469480) . It is a COVID19-related research product.
References Molla, A., et al.: J. Virology, 250, 255 (1998), Sham, H., et al.: Antimicrob. Agents Chemother., 42, 3218 (1998), Kumar, G., et al.: Drug Metab. Dispos., 27, 86 (1999),

Applications Tert-butyl Acetate is a common solvent used in the production of various industrial cleansers, thinners and adhesives and is also known as a VOC.Environmental contaminants; Food contaminants
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Mackay, D., et al.: SAR. QSAR. Enviro. Res., 23, 205 (2012); Yang, Y.S., et al.: Toxicol. Res., 26, 293 (2010);

Stability Hygroscopic
Applications A selective HIV protease inhibitor. An analogue of Ritonavir. Antiviral. It is a COVID19-related research product.
References Sham, H.L., et al.: Antimicrob. Ag. Chemother., 42, 3218 (1998), Kumar, G.N., et al.: Drug Metab. Dispos., 27, 86 (1999), Murphy, R.L., et al.: Antiviral Ther., 4, Suppl. 3, 85 (1999)

Impurity Levothyroxine EP Impurity H; T4-Benzoic Acid (USP)
Applications 3,3',5,5'-Tetraiodo Thyroformic Acid (Levothyroxine EP Impurity H; T4-Benzoic Acid (USP)) is a thyroid hormone analogue and a potent Thyroxine impurity.
References Horst, C., et al.: Biochem. J., 261, 945 (1989), Kvetny, J., et al.: Horm. Metab. Res., 24, 322 (1992), Yamauchi, K., et al.: J. Biol. Chem., 274, 8460 (1999), Davis, P., et al.: J. Endocrinol. Invest., 25, 377 (2002),

Applications Impurity of Bivalirudin, a direct thrombin inhibitor acting as an anticoagulant through inhibition of the enzyme thrombin.
References Bertrand, O. et al.: Am. J. Cardio., 110, 599 (2012); Patti, G. et al.: Am. J. Cardio., 110, 478 (2012);

Stability Hygroscopic
Applications One of the thyroid hormones involved in the maintenance of metabolic homeostasis. Synthesized and stored as amino acid residues of thyroglobulin, the major protein component of the thyroid follicular colloid. Synthesis and secretion are regulated by the pituitary hormone (TSH). Deiodinated in peripheral tissues to the active metabolite, liothyronine. The D-form has very little activity as a thyroid hormone, but has been used to treat hyperlipidemia.
References Post, A., et al.: Anal. Profiles Drug Subs., 5, 225 (1976), Nelson, J.C., et al.: Clin. Chem., 34, 1737 (1988), Fischer, D.A., et al.: Clin. Chem., 42, 135 (1996), Cavalieri, R.R., et al.: Thyroid, 7, 177 (1997),

Applications Sacubitril Impurity 2 is an impurity of Sacubitril (S080895) which is an antihypertensive drug used in combination with valsartan.
References McMurray, J., et al.: N. Eng. J. Med., 371 (2014);

Applications A labelled selective HIV protease inhibitor. An analogue of Ritonavir. Antiviral. It is a COVID19-related research product.
References Sham, H.L., et al.: Antimicrob. Ag. Chemother., 42, 3218 (1998), Kumar, G.N., et al.: Drug Metab. Dispos., 27, 86 (1999), Murphy, R.L., et al.: Antiviral Ther., 4, Suppl. 3, 85 (1999)

Applications Sugammadex Sodium-deuterated, is the labaled analogue of Sugammadex Sodium (S698100), which is the first in a class of drugs called selective relaxant binding agents that offers improved termination of the paralytic effects of neuromuscular blocking agents and may have many potential peri-operative benefits.
References Welliver, M., et al.: Drug Des. Devel. Ther., 2, 49 (2008);

Applications Thyroxine Methyl Ester is the methyl ester analog of Thyroxine (T425600) with high cross reactivity with thyroxine-specific monoclonal antibodies of humans and lab animals. It is an inhibitor of malate dehydrogenase.Thyroxine Methyl Ester is suitable for malate dehydrogenase (MDH) related research.
References Mpoko, C.N. et al.: Clin. Chim. Acta, 146, 215 (1985); Maggio, E.T. et al.: Biochim. Biophys. Acta Enzymol., 522, 284 (1978);

Applications Teduglutide TFA Salt is a polypeptide consisting of 33 amino acids. It is glucagon-like peptide-2 (GLP-2) analogue that is used for the treatment of short bowel syndrome.
References Jeppesen, P., et al.: Gut, 54, 1224 (2005)

Impurity Bortezomib USP Impurity G
Stability Hygroscopic
Applications (1S,2S)-Bortezomib is an isomer of Bortezomib (B675700), proteasome inhibitor. (1S,2S)-Bortezomib has been seen to inhibit serine proteases shown to lower cellular Aβ concentrations, associated with Alzheimer’s or hypertension.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package
References Hardy, J. et al.: Science, 297, 353 (2002); Paris, D. et al.: Mol. Med. 17, 149 (2011);

Applications Romidepsin is a histone deacetylase inhibitor that can alter chromatin structure and gene transcription leading to multiple changes in cellular protein production. This may result in cell cycle arrest and tumor growth inhibition. Romidepsin has shown anti-proliferative activity in vitro against multiple mouse and human tumor cell lines and in vivo in human tumor xenograft models. Romidepsin can be administered with a second agent, such as a cytotoxic agent, a steroidal agent, a proteasome inhibitor, or a kinase inhibitor.
References Ueda, H., et al.: J. Antibiot., 47, 301 (1994), Weidle, U., et al.: Anticancer Res., 20, 1471 (2000), Kitazono, M., et al.: Cancer Res., 61, 6328 (2001), Sandor, V., et al.: Clin. Cancer Res., 8, 718 (2002),

Applications 3,3’,5-Triiodo-L-thyronine 4’-O-Sulfate is the sulfoconjugated metabolite of 3,3’,5-Triiodo-L-thyronine (T795380).
References Rooda, S.J. et al.: J. Clin. Endocrinol. Metab., 69, 552 (1989); Everts, M. E. et al.: Metab. Clin. Exp., 43, 1282 (1994); Pinna, G. et al.: Endocrinology, 143, 1789 (2002);

Impurity Lisinopril EP Impurity F
Applications Lisinopril Cyclohexyl Analogue (Lisinopril EP Impurity F) is a Lisinopril (L468985) impurity.
References Paraskevas, G., et al.: J. Pharm. Biomed. Anal., 29, 865 (2002),

Applications (R)-1,2,3,4-Tetrahydroisoquinoline-3-carboxylic Acid, is an amino acid building block used in peptide synthesis. With a growing peptide drug market the fast, reliable synthesis of peptides is of great importance.