Carmustine EP Impurity A

Chemical Name: 1,3-Bis(2-chloroethyl)urea (as per EP & USP)

Synonym: Pregn-​4-​ene-​20-​carboxaldehyde, 3-​oxo-​, (20S)​-; (20S)-3-Oxo-pregn-4-ene-20-carboxaldehyde; 3-Oxo-pregn-4-ene-20α-carboxaldehyde; (20S)-3-Oxopregn-4-ene-20-carboxaldehyde; 3-Oxo-23,24-dinorchol-4-en-22-al; 3-Oxopregn-4-ene-20-carboxaldehyde; Dinorcholenaldehyde; NSC 9738; U 3687