.epsilon.-Caprolactam, N-methyl- 1-Methylcaprolactam 2556-73-2 2H-Azepin-2-one, hexahydro-1-methyl- 2H-Azepin-2-one, hexahydro-N-methyl- N-Methyl-.epsilon.-caprolactam N-Methylcaprolactam NSC68794 WLN: T7NVTJ A1