(.+-.)-Ethionine 67-21-0 Aethionin Butyric acid, 2-amino-4-(ethylthio)-, DL- Butyric acid, DL-2-amino-4-(ethylthio)- CN 8676 DL-2-Amino-4-(ethylthio)butyric acid DL-Ethionine DL-Homocysteine, S-ethyl- ETH Ethionin Ethionine Ethionine, DL- NSC-751 NSC751 U-1434 WLN: QVYZ2S2