1-(3-氯苯基)-3-甲基-2-吡唑啉-5-酮，CAS 登记号 90-31-3，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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1-(3-Chlorophenyl)-3-methyl-2-pyrazolin-5-one · CAS 90-31-3 · C10H9ClN2O. UNII 76806T6L7I.
| CAS Registry Number | 90-31-3 |
|---|---|
| PubChem CID | 66656 |
| Molecular formula | C10H9ClN2O |
| IUPAC name | 2-(3-chlorophenyl)-5-methyl-4H-pyrazol-3-one |
| UNII (FDA) | 76806T6L7I |
| Molecular Weight | 208.64 |
|---|---|
| XLogP3 | 1.9 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 1 |
| Exact Mass | 208.0403406 |
| Monoisotopic Mass | 208.0403406 |
| Topological Polar Surface Area | 32.7 |
| Heavy Atom Count | 14 |
| Formal Charge | 0 |
| GHS notification summary | 0.1% (3 / 2117) |
|---|
| GHS notification summary | 0.1% (3 / 2117) |
|---|---|
| Reported hazard statements | H411 (99.8%) |
This chemical does not meet GHS hazard criteria for 0.1% (3 of 2117) of reports.
H411 (99.8%): Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]
90-31-3; 1-(3-Chlorophenyl)-3-methyl-2-pyrazolin-5-one; 2-Pyrazolin-5-one, 1-(m-chlorophenyl)-3-methyl-; 1-(3-CHLOROPHENYL)-3-METHYL-5-PYRAZOLONE; 2-(3-Chlorophenyl)-2,4-dihydro-5-methyl-3H-pyrazol-3-one; EINECS 201-984-6; 3H-Pyrazol-3-one, 2-(3-chlorophenyl)-2,4-dihydro-5-methyl-; NSC 166399; EC 201-984-6; 1-(m-CHLOROPHENYL)-3-METHYL-5-PYRAZOLONE; 3-Methyl-1-(3'-chlorophenyl)-2-pyrazolin-5-one; 76806T6L7I; NSC-166399; RefChem:503425; 2-Pyrazolin-5-one, 1-(m-chlorophenyl)-3-methyl-(8CI); 201-984-6
CAS 90-31-3; molecular formula C10H9ClN2O; molecular weight — g/mol.
90-31-3, 1-(3-Chlorophenyl)-3-methyl-2-pyrazolin-5-one, 2-Pyrazolin-5-one, 1-(m-chlorophenyl)-3-methyl-, 1-(3-CHLOROPHENYL)-3-METHYL-5-PYRAZOLONE, 2-(3-Chlorophenyl)-2,4-dihydro-5-methyl-3H-pyrazol-3-one, EINECS 201-984-6.
0.1% of GHS notifications report no hazard classification (3 of 2117).
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.