4-24-00-02001 (Beilstein Handbook Reference) 5-Ethyl-5-(3-methyl-2-butenyl)-2-thiobarbituric acid 66968-74-9 Acide 5-(gamma,gamma-dimethyl-allyl) 5-ethyl thio-barbiturique [French] BARBITURIC ACID, 5-ETHYL-5-(3-METHYL-2-BUTENYL)-2-THIO- BRN 0199838