123567-32-8 123567-33-9 4-((2-Chloroethyl)methylamino)-2-butynyl (3-chlorophenyl)carbamate ethanedioate (1:1) 4-((2-Chloroethyl)methylamino)-2-butynyl N-(3-chlorophenyl)carbamate oxalate Br 383 Carbamic acid, (3-chlorophenyl)-, 4-((2-chloroethyl)methylamino)-2-butynyl ester, ethanedioate (1:1)