1115-47-5 25129-27-5 4-04-00-03205 (Beilstein Handbook Reference) Acetyl-DL-methionine BRN 1725554 DL-Methionine, N-acetyl- DL-N-Acetylmethionine EINECS 214-224-3 Methionine, N-acetyl- Methionine, N-acetyl-, DL- N-Acetyl-DL-methionine NSC 7633