5-羟基-1-甲基吡唑，CAS 登记号 33641-15-5，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。
有机化学品
每批随货提供 COA；可按需提供 MSDS 及技术文件。邮件注明产品名称与 CAS 号，一个工作日内回复报价。
本页已列出 5-羟基-1-甲基吡唑 的 CAS 号：33641-15-5，可与随货 COA 核对。
常见纯度为 按批次COA提供(不公开发布)，包装形式为 按订单/批次确认(不公开发布)，特殊规格可在询价时说明。
主要涉及有机化学品。
来信 info@591daili.com 或 WhatsApp 联系，提供产品名称、CAS 号与数量，确认价格与交期后即可安排发货，验收以批次 COA 为准。
5-Hydroxy-1-methylpyrazole · CAS 33641-15-5 · C4H6N2O.
| CAS Registry Number | 33641-15-5 |
|---|---|
| PubChem CID | 10986160 |
| Molecular formula | C4H6N2O |
| IUPAC name | 2-methyl-1H-pyrazol-3-one |
| Molecular Weight | 98.10 |
|---|---|
| XLogP3 | -0.1 |
| 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 | 32.3 |
| Heavy Atom Count | 7 |
| Formal Charge | 0 |
| GHS notification summary | 10.9% (5 / 46) |
|---|
| GHS notification summary | 10.9% (5 / 46) |
|---|---|
| Reported hazard statements | H302 (84.8%), H315 (89.1%), H318 (84.8%), H335 (84.8%) |
This chemical does not meet GHS hazard criteria for 10.9% (5 of 46) of reports.
H302 (84.8%): Harmful if swallowed [Warning Acute toxicity, oral]
1-methyl-1H-pyrazol-5-ol; 33641-15-5; 5-Hydroxy-1-methyl-1H-pyrazole; DTXSID301312855; RefChem:433879; DTXCID301225694; 608-897-6; 5-Hydroxy-1-methylpyrazole; 2-methyl-1H-pyrazol-3(2H)-one; 3310-35-8; 2-methyl-1H-pyrazol-3-one; MFCD05864418; MFCD20527389; 1-methyl-5-hydroxypyrazole; CS-0151204; 1H-Pyrazol-5-ol, 1-methyl-
CAS 33641-15-5; molecular formula C4H6N2O; molecular weight — g/mol.
1-methyl-1H-pyrazol-5-ol, 33641-15-5, 5-Hydroxy-1-methyl-1H-pyrazole, DTXSID301312855, RefChem:433879, DTXCID301225694.
10.9% of GHS notifications report no hazard classification (5 of 46).
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.