(R)-Lorazepam is a chemical compound registered under CAS number 91402-80-1, with the molecular formula C15H10Cl2N2O2 and a molecular weight of about 321.15 g/mol. It is also known as 2H-1,4-Benzodiazepin-2-one, 7-chloro-5-(2-chlorophenyl)-1,3-dihydro-3-hydroxy-, (3R)- (9CI); 2H-1,4-Benzodiazepin-2-one, 7-chloro-5-(2-chlorophenyl)-1,3-dihydro-3-hydroxy-, (R)-. DeWeiChem supplies (R)-Lorazepam for laboratory research and bulk production; product code 1259542. Send an inquiry for purity, packaging, price and lead time.