Building Blocks

Impurity Loratadine USP Related Compound E
Applications Loratadine impurity. Loratidine impurity E. Loratadine USP Related Compound E.
References Villani, et al.: J. Med. Chem., 15, 750 (1972), Zhong, D., et al.: Pharmazie, 49, 736 (1994), Ruperez, F., et al.: J. Pharm. Biomed. Anal., 29, 35 (2002),

Stability Light Sensitive
Applications 1-Vinylimidazole (cas# 1072-63-5) is a useful research chemical.

Applications n-Hexyl 4-Hydroxybenzoate-2,3,5,6-d4 (CAS# 2241800-08-6) is a useful isotopically labeled research compound. This compound has been found to be an endocrine disruptor that was found in a study involving pantyhose.
References Li, A.,et.al., Environ.Sci.Technol., 52,10812-10819,(2018);

Applications Hexamethyldisilazane is used in the preparation of 5-azacytidine, an antineoplastic drug. Also used in the preparation of β3-AR agonists used in anti-stress formulations.
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 Vujjini, S. et al.: Org. Proc. Res. Dev., 17, 303 (2013); Xu, F. et al.: Org. Lett., 15, 1342 (2013);

Stability Hygroscopic
Applications Hydroxylysylpyridinoline, is a derivative of Pyridinoline, which is a is a fluorescent cross-linking compound of collagen fibers. It is also found to beto be released into the blood during bone degradation, and thus there are proposed as a marker for metastatic bone tumor in patients with prostate cancer.
References Gallop, PM., et al.: Annu. Rev. Biochem., 41, 617 (1972); Fujimoto, D., et al.: Biochem. Biophys. Rese. Comm., 76, 1124 (1977);

Applications L-Histidine is an essential amino acid for human development which the body cannot produce on its own. L-Histidine is one of the 22 proteinogenic amino acids. L-Histidine precursor to histamine (H436500) and a component of carnosine.
References Kopple, J.D. et al.: J. Clin. Invest., 55, 881 (1975); Sachs, D.H., et al.: J. Biol. Chem., 246, 6576 (1971); Mercer, L.P., et al.: Nutrition, 6, 273 (1990); Morgan, W.T., et al.: J. Biol. Chem., 268, 6256 (1993);

Stability Moisture Sensitive
Applications Reacts with primary amines to add protected sulfhydryls.
References Duncan, R.J.S., et al.: Anal. Biochem., 132, 68 (1983)

Applications 5-Hydroxypentanoic acid sodium salt

Stability Hygroscopic
Applications p-Hydroxyphenylacetylglycine is derived from the metabolism of L-DOPA (D533751), a dopamine precursor that induces dyskinesia in Parkinson’s disease patients. p-Hydroxyphenylacetylglycine is also used as a reagent to synthesize novel piperazine salts that have antimicrobial activity against Escherichia coli and Bacillus subtilis.
References Abha, B., et al.: Pharma Chemica, 2, 446 (2010); Picconi, B., et al.: Nat. Neurosci., 6, 501 (2003)

Applications L-Histidine Monohydrochloride Monohydrate is a histamine precursor via histidine decarboxylase. Also, they are grown as crystals which possesses anti-bacterial activity.
References Chandra, J. S., et al.: World J. Pharm. Res., 4, 1408-1429 (2015)

Applications Antihypertensive; diuretic.
References Piala, J.J., et al.: J. Pharmacol. Exp. Ther., 134, 273 (1961), Orzech, C.E., et al.: Anal. Profiles Drug Subs., 7, 297 (1978),

Stability Hygroscopic
Applications 4-Hydroxybutyric Acid Methyl Ester is a derivative of 4-Hydroxybutyric Acid (H833015). A reactant used in the preparation of 4-aminothiazolyl analogs of natural product GE2270 A, useful against Clostridium difficile infection.
References LaMarche, M. et al.: J. Med. Chem., 55, 2376 (2012)

Applications Byproduct produced in the preparation of Atropine.

Stability Hygroscopic
Applications A metabolite of Catecholamines.
References Kopin, I.J., et al.: J. Biol. Chem., 236, 2109 (1961), Short, F.W., et al.: J. Med. Pharm. Chem., 5, 642 (1962)

Applications 2-Phenoxyethanol-d2 is labeled 2-Phenoxyethanol (P297900) which is a preservative used in cosmetics and is also used as an anesthetic in aquaculture and fisheries.
References Pillai, R., et. al.: Cosmet. Technol., 16, 25 (2013); Ghanawi, J., et. al.: Aquac. Res., 44, 359 (2013)

Applications A chelating agent, forming complexes with most metal ions.
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 El-Didamony, A., et al.: Drug Test. Anal., 2, 122 (2010), Chan, A., et al.: J. Med. Chem., 53, 3086 (2010), Ehrman, T., et al.: Bioorg. Med. Chem., 18, 2204 (2010),

Applications DL-Penicillamine is a penicillin metabolite used in the treatment of Wilson’s disease, Cystinuria, Scleroderma and arsenic poisoning.
References Marti-Prats, L., et al.: Neurosci. Lett., 483, 143 (2010); Singh, A., et al.: J. Pharm. Sci., 99, 3931 (2010); Everette, J., et al.: J. Agric. Food Chem., 58, 8139 (2010)

Applications A Penicillin metabolite used in the treatment of Wilson’s disease, Cystinuria, Scleroderma and arsenic poisoning.
References Marti-Prats, L., et al.: Neurosci. Lett., 483, 143 (2010); Singh, A., et al.: J. Pharm. Sci., 99, 3931 (2010); Everette, J., et al.: J. Agric. Food Chem., 58, 8139 (2010);

Applications Fatty acid ester with glycerol chlorohydrins shows mutagenic activity.
References Janis, R., et al.: J. Food Lipids, 13, 199 (2006), Seefelder, W. et. al.: Food Additiv. Contamin., 1, 10 (2007)

Applications (4-Vinylphenyl)methanol (cas# 1074-61-9) is a useful research chemical.

Stability Moisture Sensitive
Applications Palmitoyl Chloride was used as a polymeric carriers for plasmid DNA (pDNA) delivery to 293T cells.
References Remant, B.K.C., et al.: J. Biomaterials. Sci. Poly. Ed., 22, 873 (2011); Allard, E., et al.: Int. J. Pharma., 379, 217 (2009);

Applications Paeonol acting as a β-Secretase inhibitor an anti-apoptotic agent is used in the treatment of memory loss after ischemic stroke. Anti-inflammatory and analgesic.
References Hsieh, C., et al.: J. Ethnopharmacol., 106, 208 (2006); Chou, T., et al.: Brit. J. Pharmacol., 139, 1146 (2003);

Applications 17a-Oxa-D-homo-5β-androst-1-ene-3,17-dione is a metabolite in the urine of men following treatment with Δ1-testololactone, which is an idiopathic oligospermic infertility. Also, it is derived from Androstenedione (A637550), which is a testosterone precursor and metabolite with androgenic activity. Controlled substance (anabolic steroid).
References Yaeger, R. L., et al.: Drug Metab. Dispos., 13, 107-109 (1985); Walker, V.R., et al.: Anal. Biopchem., 234, 194 (1996), King, D.S., et al.: J. Am. Med. Assoc., 281, 2020 (1999)

Applications Vinylene Carbonate is the smallest unsaturated cyclic carbonic acid ester. It is used as an additive for electrolyte solutions for Lithium-ion and Sodium-ion batteries.
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 Aurbach, D., et al.: Electrochim. Acta, 47, 1423 (2002); Hu, Y., et al.: Angew. Chem. Int. Ed., 47, 1645 (2008); Komaba, S., et al.: Adv. Funct. Mater., 21, 3859 (2011);

Applications (2-Nitrophenyl)hydrazine (cas# 3034-19-3) is a useful research chemical.

Stability Moisture Sensitive
Applications Norcantharidin is a potential antitumor agent.

Stability Hygroscopic
Applications 4-Nitrocatechol Sulfate Dipotassium Salt (cas# 14528-64-4) is a compound useful in organic synthesis.

Stability Moisture sensitive
Applications Phthalic Anhydride is an organic compound and the anhydride of phthalic acid (P384480). Phthalic Anhydride is an important industrial chemical commonly used in large-scale production of plasticizers for plastics. Recent research have also evaluated Phthalic Anhydride as potential antibacterial agent.
References Balaswamy, G., et al.: Intern. J. Chem. Sci., 10, 619 (2012);

Applications 1,1,3,3-Tetraethoxypropane has been used in the preparation of diazabicyclodecenes.
References Barykina-Tassa, O.V., Snider, B.B.: Tetrahedron Lett., (Ahead of Print) (2015)

Applications Phytosphingosine is a natural anti-microbial compound and it is involved in several cellular processes such as cell differentiation and anti-inflammation.
References Chuong, C., et al.: Exp. Dermatol., 11, 159 (2002), Bustin, S., et al.: J. Mol. Endocrinol., 29, 23 (2002), Kim, S., et al.: Mol. Med., 12, 17 (2006), Pavicic, T., et al.: Int. J. Cosmetic Sci., 29, 181 (2007),

Applications 2-Pinene is found in the oils of many species of many coniferous trees, notably the pine. At low exposure levels, 2-Pinene is a bronchodilator in humans, and is highly bioavailable with 60% human pulmonary uptake with rapid metabolism or redistribution. 2-Pinene is an anti-inflammatory via PGE1, and seems to be a broad-spectrum antibiotic.
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 Russo, E.: Brit. J. Pharmacol, 163, 1344 (2011); Nissen, L., et al.: Fitoterapia 81, 413 (2010)

Applications N-Boc-piperazine (cas# 57260-71-6) is a compound useful in organic synthesis.