| 2(5H)-Furanone | ChEBI |
| 2-Buten-4-olide | ChEBI |
| 2-Butenolide | ChEBI |
| 2-oxo-2,5-Dihydrofuran | ChEBI |
| 4-Hydroxy-2-butenoic acid lactone | ChEBI |
| alpha,beta-Crotonolactone | ChEBI |
| Butenolide | ChEBI |
| gamma-Crotonolactone | ChEBI |
| gamma-Hydroxycrotonic acid lactone | ChEBI |
| 4-Hydroxy-2-butenoate lactone | Generator |
| a,b-Crotonolactone | Generator |
| Α,β-crotonolactone | Generator |
| g-Crotonolactone | Generator |
| Γ-crotonolactone | Generator |
| g-Hydroxycrotonate lactone | Generator |
| g-Hydroxycrotonic acid lactone | Generator |
| gamma-Hydroxycrotonate lactone | Generator |
| Γ-hydroxycrotonate lactone | Generator |
| Γ-hydroxycrotonic acid lactone | Generator |
| 4-Hydroxy-2-butenoate g-lactone | Generator |
| 4-Hydroxy-2-butenoate gamma-lactone | Generator |
| 4-Hydroxy-2-butenoate γ-lactone | Generator |
| 4-Hydroxy-2-butenoic acid g-lactone | Generator |
| 4-Hydroxy-2-butenoic acid γ-lactone | Generator |
| 2(5H)-Furanone (laquo gammaraquo -crotonolactone) | HMDB |
| 2-(5H)-Furanone | HMDB |
| 2-Buten-1,4-olide | HMDB |
| 2-Butenoic acid gamma-lactone | HMDB |
| 2-Butenoic acid, 4-hydroxy-, gamma-lactone | HMDB |
| 2-Butenoic acid, 4-hydroxy-, laquo gammaraquo -lactone | HMDB |
| 2-Butenoic acid-gamma-lactone | HMDB |
| 2-Butenoic acid-laquo gammaraquo -lactone | HMDB |
| 2-oxo-2,5-Dihydrofuran(2-[5H]-furanone) | HMDB |
| 4-Hydroxy-2-butenoic acid laquo gammaraquo -lactone | HMDB |
| 4-Hydroxycrotonic acid gamma-lactone | HMDB |
| 5 H-Furan-2-one | HMDB |
| 5H-Furan-2-one | HMDB |
| alpha,alpha,beta-Butolide | HMDB |
| Crotonic acid, 4-hydroxy-, gamma-lactone (6ci,7ci) | HMDB |
| Crotonic acid, 4-hydroxy-, laquo gammaraquo -lactone | HMDB |
| Crotonolactone | HMDB |
| delta,alpha,beta-Butenolide | HMDB |
| Furan-2(5H)-one | HMDB |
| gamma-Crotolactone | HMDB |
| Isocrotonolactone | HMDB |
| Laquo deltaraquo ,alpha,beta-butenolide | HMDB |
| Laquo gammaraquo -crotolactone | HMDB |
| Laquo gammaraquo -crotonolactone | HMDB |
| Laquo gammaraquo -hydroxycrotonic acid lactone | HMDB |
| 2-b4O | HMDB |
| 2-Furanone | HMDB |