Building Blocks

Applications α-Desethyl Butamirate is an impurity in the synthesis of Butamirate (B690025), an antitussive drug.
References Wang, T., et al.: J. Pharm. Biomed. Anal., 23, 867 (2000), Lasztity, A., et al.: Microchem. J., 73, 59 (2002), Wang, L., et al.: J. Pharm. Biomed. Anal., 33, 961 (2003), Lewen, N., et al.: J. Pharm. Biomed. Anal., 35, 739 (2004),

Applications 2-Chloro-5-(chloromethyl)pyridine, is a building block used for the synthesis of various pharmaceutical compounds. It can also be used for the synthesis of new neonicotinoid compounds, having insecticidal activity.
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 Deng, X., et al.: Jingxi Huagong Zhongjianti, 42, 23 (2012);

Applications 4-Methyldibenzothiophene, is an alkyldibenzothiophene present in crude oil. Research concerning the biodegradation of Dibenzothiophene by different types of bacteria is a currently being carried out, as these bacteria have the ability to breakdown other harmful PAH’s as well. This may be used in removing spilled oil from marine and terrestrial environments.
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 Boberg, F., et al.: Erdoel & Kohle, Erdgas, Petrochemie, 47, 187 (1994); Tanaka, Y., et al.: Applied Microbiology and Biotech., 59 (2), 325 (2002); Prince, R., Spill Sci. Tech. Bulletin, 8 (2), 145 (2003);

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)

Stability Light Sensitive
Applications D-α-Tocopherol Quinone is an vitamin E derivative that exhibits antioxidant properties. D-α-Tocopherol Quinone has been shown to partially restore the activity of NADH dehydrogenase and used to investigate the electron transport system in rat hepatocyte and human erythrocyte.
References Sun, I. L., et al.: Proc. Natl. Acad. Sci. USA 89, 11126 (1992); Hosomi, A., et al.: FEBS Lett. 409, 105 (1997)

Impurity Diacerein Impurity C
Stability Hygroscopic
Applications Found in the free state and as glucoside in Rheum spp, Polygonaceae (rhubarb) and in Senna leaves.A potential antioxidant resource: endophytic fungi from medicinal plants . Diacerein Impurity C
References Wanitschke, Pharmacology, 20, Suppl. 1, 21 (1980), Raimondi, L., et al.: Pharmacol. Res. Commun., 14, 103 (1982), Franchi-Micheli, S., et al.: J. Pharm. Pharmacol., 35, 262 (1983),

Applications 3-BROMOPHENANTHRENE (cas# 715-50-4) is a useful research chemical.
Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package

Applications A potent inhibitor of gluconeogenesis.
References Blank, B., et al.: J. Med. Chem., 17, 1065 (1974), Memoli, K.A., Tetrahedron Letters, 37, 21, 3617 (1996)

Stability Hygroscopic
Applications rac-Citronellal is a monoterpenoid and the major isolate in citronella oil. Citronella oil is an essential oil bearing insecticidal properties. rac-Citronellal is also often used as a fragrance ingredient.
References Waliwitiya, R., et al.: J. Med. Entomol., 49, 614 (2012);

Applications Isobutyl Nitrite is used in the preparation of plasmoquin.
References Han, Qiang. et al., Faming Zhuanli Shenqing.(2020):

Impurity Sulfadimethoxine EP Impurity A
Applications 4-Amino-2,6-dimethoxypyrimidine is a compound that may be polychlorinated (1). It is also (Sulfadimethoxine EP Impurity A) is an impurity of Sulfadimethoxine (S699060), an antibacterial agents that is an emerging contaminant of concern (2).
References 1. Smith, M. et al.: Org. Lett. 2016 May 6;18(9):2180-32. Ricken, B. et al.: Appl. Environ. Microbiol. 2013 Sep;79(18):5550-8

Stability Light Sensitive
Applications 4-Methoxyphenylhydrazine hydrochloride was used in the preparation of 5-cyano-3-(5-methoxy-2-methylindol-3-yl)-1,2,4-thiadiazole. It was also used to synthesize diarylpyrazoles as possible cyclooxygenase 2 ((COX-2)) inhibitors.
References Iwakawa, T., et al.: Chem. Pharm. Bull., 48, 160 (2000); Penning, T., et al.: J. Med. Chem., 40, 1347 (1997)

Applications Chloroquinolines block antibiotic efflux pumps in antibiotic-resistant Enterobacter aerogenes isolates.
References Canton, R., et al.: J. Clin. Microbiol., 40, 1237 (2002), Yu, E., et al.: Science, 300, 976 (2003), Chollet, R., et al.: Antimicrob. Agents Chemother., 48, 2518 (2004), Li, X., et al.: Drugs, 64, 159 (2004),