| 1 | 110-00-9 | 呋喃 | Furan | C4H4O
| 呋喃;试剂;通用试剂;有机原料;分析标准品;有机化工原料;化工产品-有机化工 | 有机合成 |
| 2 | 52844-23-2 | | but-3-ynal | C4H4O
| | |
| 3 | 78957-08-1 | CH3CH=C=C=O | CH3CH=C=C=O | C4H4O
| | |
| 4 | 103905-52-8 | CH2=C(OH)C=CH | CH2=C(OH)C=CH | C4H4O
| | |
| 5 | 1423-60-5 | 3-丁炔-2-酮 | but-3-yn-2-one | C4H4O
| 炔烃;有机砌块;通用试剂;羰基化合物;其他化学试剂;肼类含氮化合物 | |
| 6 | 32264-87-2 | 2-环丁烯-1-酮 | 2-Cyclobuten-1-one | C4H4O
| | |
| 7 | | FURAN FOR SYNTHESIS | FURAN FOR SYNTHESIS | C4H4O
| | |
| 8 | 53268-92-1 | | 2,3-Butadienal (9CI) | C4H4O
| | |
| 9 | | (S)-2-Ethynyl-oxirane | (S)-2-Ethynyl-oxirane | C4H4O
| pharmacetical | |
| 10 | | (R )-2-Ethynyl-oxirane | (R )-2-Ethynyl-oxirane | C4H4O
| pharmacetical | |
| 11 | 59095-55-5 | | 1-Buten-3-yn-1-ol (9CI) | C4H4O
| | |
| 12 | 1119-19-3 | 2-丁炔醛 | methylpropiolic aldehyde | C4H4O
| | |
| 13 | 918826-65-0 | | Oxirane, 2-ethynyl-, (2R)- | C4H4O
| | |
| 14 | 59078-44-3 | | Methanone, cyclopropylidene- | C4H4O
| | |
| 15 | 74496-19-8 | | 5-Oxabicyclo[2.1.0]pent-2-ene | C4H4O
| | |