1-Methyl-1H-pyrazol-5-ol hydrochloride
Also known as: 2-methyl-1H-pyrazol-3-one,hydrochloride, Topramezon-001-HCl, 5-hydroxy-1-methylpyrazole hydrochloride, 1-methyl-5-hydroxypyrazole hydrochloride, 2-methyl-1H-pyrazol-3-one hydrochloride
1-Methyl-1H-pyrazol-5-ol hydrochloride (CAS 33641-16-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H7ClN2O and a molecular weight of 134.56400 g/mol. It is listed by 3 suppliers, 2 of which publish reference prices, from 31.00 to 540.00 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 33641-16-6
- Jingsj CID
- J-1003105-0
- Molecular Formula
- C4H7ClN2O
- Molecular Weight
- 134.56400 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | 95% 10g | ¥310.00 | $4.64 /gBest ¥31.00/g CNY | CN China MOQ 标准 | |
In Stock | 95% 10g | ¥4,980.00 | $74.52 /g ¥498.00/g CNY | CN China MOQ 25g | |
In Stock | 95% 5g | ¥2,580.00 | $77.22 /g ¥516.00/g CNY | CN China MOQ 5g |
Physicochemical Properties
| Exact Mass | 134.02500 |
|---|---|
| PSA | 38.05000 |
| LogP | 0.92770 |
Customs & Trade Information
| HS Code | 2933199090 |
|---|---|
| Summary | 2933199090. other compounds containing an unfused pyrazole ring (whether or not hydrogenated) in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0% |
Frequently Asked Questions
What is the CAS number of 1-Methyl-1H-pyrazol-5-ol hydrochloride?
The CAS number of 1-Methyl-1H-pyrazol-5-ol hydrochloride is 33641-16-6.
What are the molecular formula and molecular weight of 1-Methyl-1H-pyrazol-5-ol hydrochloride?
1-Methyl-1H-pyrazol-5-ol hydrochloride has molecular formula C4H7ClN2O and molecular weight 134.56400 g/mol.
Which suppliers offer 1-Methyl-1H-pyrazol-5-ol hydrochloride?
3 supplier(s) listed; reference unit price ¥31.00–540.00 /g.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1-Methyl-1H-pyrazol-5-ol hydrochloride (CAS 33641-16-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1003105-0 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.