| 1 | 488-93-7 | 3-糠酸 | 3-Furoic acid | C5H4O3
| 呋喃;杂环类;呋喃类;中间体;超干溶剂;医药中间体;试剂和补充物;有机化工原料;羧酸类衍生物;环氧丁烯衍生物 | 食品添加剂;杀虫剂 |
| 2 | 2170-03-8 | 衣康酸酐 | Itaconic Anhydride | C5H4O3
| 合成;原料;有机原料;有机化工;化工原料;化工中间体;有机化工原料;医药原料中间体;化工原料-表面活性剂 | 杀虫剂 |
| 3 | 616-02-4 | 柠康酸酐 | Citraconic anhydride | C5H4O3
| 对照品;羧酸酐;有机砌块;通用试剂;橡塑助剂;化工材料;医药中间体;化工中间体;有机化工原料 | |
| 4 | 5926-95-4 | 2H-吡喃-2,6(3H)-二酮 | 2H-Pyran-2,6(3H)-dione | C5H4O3
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| 5 | 76031-43-1 | 2H-Pyran-3,4-dione(9CI) | 2H-Pyran-3,4-dione(9CI) | C5H4O3
| | |
| 6 | 496-64-0 | 3-羟基-2-吡喃酮 | 3-hydroxy-2H-pyran-2-one | C5H4O3
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| 7 | 31470-16-3 | 2H-Pyran-2,4(3H)-dione(9CI) | 2H-Pyran-2,4(3H)-dione(9CI) | C5H4O3
| | |
| 8 | 107997-80-8 | 5-羟基糠醛 | 5-hydroxyfuran-2-carbaldehyde | C5H4O3
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| 9 | | 3-Methoxy-3-cyclobutene-1,2-dione | 3-Methoxy-3-cyclobutene-1,2-dione | C5H4O3
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| 10 | 5617-74-3 | 3-氧杂二环[3,1,0]己烷-2,4-二酮 | 3-oxabicyclo(3.1.0)hexane-2,4-dione | C5H4O3
| 合成;有机化学;精细化学品 | |
| 11 | 107997-81-9 | | 2(5H)-Furanone, 5-(hydroxymethylene)- | C5H4O3
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| 12 | | Cyclopropane-1,2-dicarboxylic anhydride | Cyclopropane-1,2-dicarboxylic anhydride | C5H4O3
| | |
| 13 | 125973-97-9 | 3-Furancarboxaldehyde, 2,5-dihydro-5-oxo- | 3-Furancarboxaldehyde, 2,5-dihydro-5-oxo- | C5H4O3
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| 14 | | 3-hydroxy-4-methylcyclobut-3-ene-1,2-dione | 3-hydroxy-4-methylcyclobut-3-ene-1,2-dione | C5H4O3
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| 15 | 29769-75-3 | 3-Cyclobutene-1,2-dione, 3-hydroxy-4-methyl- | 3-Cyclobutene-1,2-dione, 3-hydroxy-4-methyl- | C5H4O3
| | |
| 16 | | (1S,5R)-2,4-Dioxabicyclo[3.2.0]hept-6-en-3-one | (1S,5R)-2,4-Dioxabicyclo[3.2.0]hept-6-en-3-one | C5H4O3
| | |
| 17 | 2011770-70-8 | 2,6-二氧杂双环[3.1.0]己-3-烯-3-甲醛 | 2,6-Dioxabicyclo[3.1.0]hex-3-ene-3-carboxaldehyde | C5H4O3
| | |
| 18 | 18530-81-9 | (R)-1-((3aR,5R,6S,6aS)-6-氟-2,2-二甲基四氢呋喃并[2,3-d][1,3]二噁戊环-5-基)乙烷-1,2-二醇 | (R)-1-((3aR,5R,6S,6aS)-6-fluoro-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)ethane-1,2-diol | C5H4O3
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