3-甲基-5-吡唑啉酮，CAS 登记号 108-26-9，由济南圣和化工有限公司现货供应，可提供纯度 按批次COA提供(不公开发布) 的规格，下游主要用于有机化学品。支持样品与小批量试用，批量价格请联系我们获取，验收以批次 COA 为准。
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本页已列出 3-甲基-5-吡唑啉酮 的 CAS 号：108-26-9，可与随货 COA 核对。
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3-Methyl-5-Pyrazolone · CAS 108-26-9 · C4H6N2O. UNII P378M0497D.
| CAS Registry Number | 108-26-9 |
|---|---|
| PubChem CID | 7920 |
| Molecular formula | C4H6N2O |
| IUPAC name | 3-methyl-1,4-dihydropyrazol-5-one |
| UNII (FDA) | P378M0497D |
| Molecular Weight | 98.10 |
|---|---|
| XLogP3 | -0.5 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 0 |
| Exact Mass | 98.048012819 |
| Monoisotopic Mass | 98.048012819 |
| Topological Polar Surface Area | 41.5 |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| GHS notification summary | 9% (11 / 122) |
|---|
| GHS notification summary | 9% (11 / 122) |
|---|---|
| Reported hazard statements | H400 (86.1%), H410 (86.1%) |
This chemical does not meet GHS hazard criteria for 9% (11 of 122) of reports.
H400 (86.1%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
3-Methyl-2-pyrazolin-5-one; 3-Methyl-5-pyrazolone; 3-Methyl-1H-pyrazol-5(4H)-one; 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-; 2,4-Dihydro-5-methyl-3H-pyrazol-3-one; NSC 4120; EINECS 203-565-3; BRN 0606503; UNII-P378M0497D; DTXSID2051554; EC 203-565-3; NSC-4120; P378M0497D; RefChem:94745; DTXCID6030106; 1H-PYRAZOL-3-OL, 5-METHYL-
CAS 108-26-9; molecular formula C4H6N2O; molecular weight — g/mol.
3-Methyl-2-pyrazolin-5-one, 3-Methyl-5-pyrazolone, 3-Methyl-1H-pyrazol-5(4H)-one, 3H-Pyrazol-3-one, 2,4-dihydro-5-methyl-, 2,4-Dihydro-5-methyl-3H-pyrazol-3-one, NSC 4120.
9% of GHS notifications report no hazard classification (11 of 122).
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.