![Molecular structure of 1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol (CAS 5334-56-5)](/images/chem_structures_svg/175/5334-56-5.svg)
1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol
Also known as: 1-Methyl-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one, 1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one, 1-Methyl-4-hydroxypyrazolo[3,4-d]pyrimidine, 9-Methylallopurinol, 4-Hydroxy-1-methyl-1H-pyrazolo[3,4-d]pyrimidine, 4-Hydroxy-1-methylpyrazolo[3,4-d]pyrimidine, 1-methylpyrazolo[3,4-d]pyrimidin-4(5H)-one, 1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4(5H)-one, NSC 1439, NSC 635171
1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol (CAS 5334-56-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H6N4O and a molecular weight of 150.138 g/mol. Key properties include a melting point of >250ºC, a boiling point of 426.5±18.0 °C at 760 mmHg, a density of 1.6±0.1 g/cm3 and a flash point of 211.8±21.2 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.
- CAS No.
- 5334-56-5
- Jingsj CID
- J-850638-5
- Molecular Formula
- C6H6N4O
- Molecular Weight
- 150.138 g/mol
- Category
- Pharma Intermediates
- Last updated
- 11/3/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | >250ºC |
|---|---|
| Boiling Point | 426.5±18.0 °C at 760 mmHg |
| Density | 1.6±0.1 g/cm3 |
| Flash Point | 211.8±21.2 °C |
| Exact Mass | 150.054153 |
| PSA | 63.57000 |
| LogP | -0.63 |
| Vapor Pressure | 0.0±1.0 mmHg at 25°C |
| Refractive Index | 1.772 |
Customs & Trade Information
| HS Code | 2933990090 |
|---|---|
| Summary | 2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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-pyrazolo[3,4-d]pyrimidin-4-ol?
The CAS number of 1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol is 5334-56-5.
What are the molecular formula and molecular weight of 1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol?
1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol has molecular formula C6H6N4O and molecular weight 150.138 g/mol.
What are the upstream and downstream products of 1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol?
For 1-Methyl-1H-pyrazolo[3,4-d]pyrimidin-4-ol, Upstream Products: 5-Amino-1-methyl-1H-pyrazole-4-carboxamide, Ethyl formate, 1-methyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine; Downstream Products: 4-Chloro-1-methyl-1H-pyrazolo[3,4-d]pyrimidine.
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-pyrazolo[3,4-d]pyrimidin-4-ol (CAS 5334-56-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-850638-5 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.