1-Methyl-1-phenylhydrazine 1-Methylphenylhydrazine 618-40-6 EINECS 210-547-9 Hydrazine, 1-methyl-1-phenyl- N-Methyl-N-phenylhydrazine N-Phenyl-N-methylhydrazine NSC 525518 alpha-Methyl-alpha-phenylhydrazine