| CAS登錄號 | 中文名 | 英文名 | 分子結構式 | 分子式 | 詳情 | 供應商 |
| 4095-06-1 | Cyclopropene,3-methylene-; Cyclopropene,methylene- (7CI,8CI,9CI); 3-Methylenecyclopropene; Methylenecyclopropene; Triafulvene |  | C4H4 | 詳情 | 供應商 | |
| 689-97-4 | 乙烯基乙炔 | 1-Buten-3-yne; 1-Butenyne; 1-Butyn-3-ene; 3-Buten-1-yne; 3-Butyn-1-ene; Butenyne; Ethene, ethynyl-; Monovinylacetylene; Vinylacetylene; Vinylethyne |  | C4H4 | 詳情 | 供應商 |
| 2873-50-9 | 1,2,3-Butatriene (9CI); Butatriene(6CI,7CI,8CI) |  | C4H4 | 詳情 | 供應商 | |
| 157-39-1 | Tricyclo[1.1.0.02,4]butane; Tetrahedran; Tetrahedrane |  | C4H4 | 詳情 | 供應商 | |
| 1120-53-2 | 1,3-Cyclobutadiene; Cyclobutadiene(6CI); [4]Annulene |  | C4H4 | 詳情 | 供應商 |