| 1 | 35974-86-8 | CROTYLPHOSPHATE | CROTYLPHOSPHATE | C4H9O4P
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| 2 | 51374-71-1 | 磷酸伸丁酯 | tetramethylene phosphate | C4H9O4P
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| 3 | | Isobutyrylphosphonic acid | Isobutyrylphosphonic acid | C4H9O4P
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| 4 | | Dimethyl acetylphosphonate | Dimethyl acetylphosphonate | C4H9O4P
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| 5 | 15090-23-0 | 3-甲基亚磷粪介子 | 3-Methylphosphinicopropionic Acid | C4H9O4P
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| 6 | | 3-(Methylphosphonyl)propanoic acid | 3-(Methylphosphonyl)propanoic acid | C4H9O4P
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| 7 | | [1-Methyl-2-oxopropyl]phosphonic acid | [1-Methyl-2-oxopropyl]phosphonic acid | C4H9O4P
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| 8 | 91154-17-5 | 2-methylphosphinoyl-2-hydroxyacetic acid | 2-methylphosphinoyl-2-hydroxyacetic acid | C4H9O4P
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| 9 | 17674-28-1 | Phosphonic acid, P-acetyl-, dimethyl ester | Phosphonic acid, P-acetyl-, dimethyl ester | C4H9O4P
| | |
| 10 | 2323074-18-4 | Propanoic acid, 3-[(hydroxymethyl)phosphinyl]- | Propanoic acid, 3-[(hydroxymethyl)phosphinyl]- | C4H9O4P
| | |
| 11 | 763886-65-3 | Phosphonic acid, (3-methyloxiranyl)-, monomethyl ester, trans-(-)- (9CI) | Phosphonic acid, (3-methyloxiranyl)-, monomethyl ester, trans-(-)- (9CI) | C4H9O4P
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