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Cefalexin Impurity H
Synonyms: L-Cephalexin; (6R,7R)-7-[[(2S)-2-amino-2-phenylacetyl]amino]-3-methyl-8-oxo-5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid; [6R-[6a,7ß(S*)]]-7-[(Aminophenylacetyl)amino]-3-methyl-8-oxo-5-Thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid;7-(a-Amino-L-phenylacetamido)-3-deacetoxycephalosporanic Acid;
Cat. No.: C20305	CAS No.: 34632-04-7
MDL.:	Formula: C16H17N3O4S
F.W.347.39	Purity: 99%
Storage: Hygroscopic, -20°C Freezer, Under inert atmosphere

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Catalog Number：	C20305		CAS No.:	34632-04-7
MDL:			Formula:	C16H17N3O4S
F.W.:	347.39		Purity:	99%
Package:			Unit:	mg
Appearance:	Off-White Solid		M.P.:	171-173°C (dec.)
B.P.:			Density:
Optical Rotation:			Refractive Index:
Solubility:	DMSO, Aqueous Acid		Stability:
Storage:	Hygroscopic, -20°C Freezer, Under inert atmosphere		Category:	Reference Standard
Reference:	Mitsuoka, K. et al.: Biol. Pharmac. Bull., 32, 1459 (2009); Snyder, N.J. et al.: Antimicrob. Agents Chemother., 41, 1649 (1997);
Application:	The L-diastereomer of the ß-lactam antibiotic Cephalexin. It is is transported by PEPT1 (the oligopeptide transporter responsible for absorption of peptide nutrients in the small intestine) with high affinity, but is not metabolized by PEPT1 itself.
Category:	Amines, Chiral Reagents, Heterocycles, Pharmaceuticals, Intermediates & Fine Chemicals, Sulfur & Selenium Compounds

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