CEPHALEXINE HYDROCHLORIDE Extra Pure (for lab use) is a fine chemical product from the brand RESEARCH-LAB FINE CHEM INDUSTRIES. Molecular Formula: C16H20ClN3O5SCAS Number: 105879-42-3Molecular Weight: 401.862Quantity: 25 gm/BottleCephalexin hydrochloride is a semisynthetic cephalosporin antibiotic with antimicrobial activity similar to that of CEPHALORIDINE or CEPHALOTHIN, but somewhat less potent. It is effective against both gram-positive and gram-negative organisms.