(D)-ETHIONINE (L)-Ethionine 13073-35-3 4-04-00-03194 (Beilstein Handbook Reference) 55-17-4 89955-21-5 BRN 1722528 Butanoic acid, 2-amino-4-(ethylthio)-, (S)- Butyric acid, 2-amino-4-(ethylene)-, L- Butyric acid, 2-amino-4-(ethylthio)-, L- CCRIS 289 EINECS 235-966-4 ETH Ethionine Ethionine (VAN) HSDB 5080 Homocysteine, S-ethyl- L-2-Amino-4-(ethylthio)butyric acid L-Ethionine L-Homocysteine, S-ethyl- L-S-Ethylhomocysteine NSC 82393 S-Ethyl-L-homocysteine