1,3-Dimethyl-4-nitro-1H-pyrazole
Also known as: 1,3-Dimethyl-4-nitropyrazole, 1,3-Dimethyl-4-nitro-1H-pyrazol, 1,3-Dimethyl-4-nitro-pyrazole, 1H-Pyrazole, 1,3-dimethyl-4-nitro-
1,3-Dimethyl-4-nitro-1H-pyrazole (CAS 3920-38-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H7N3O2 and a molecular weight of 141.128 g/mol. Key properties include a boiling point of 243.0±20.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 100.7±21.8 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 3920-38-5
- Jingsj CID
- J-1465337-3
- Molecular Formula
- C5H7N3O2
- Molecular Weight
- 141.128 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 243.0±20.0 °C at 760 mmHg |
|---|---|
| Density | 1.4±0.1 g/cm3 |
| Flash Point | 100.7±21.8 °C |
| Exact Mass | 141.053833 |
| PSA | 63.64000 |
| LogP | 0.90 |
| Vapor Pressure | 0.1±0.5 mmHg at 25°C |
| Refractive Index | 1.599 |
| Storage Conditions | 2-8°C |
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 1,3-Dimethyl-4-nitro-1H-pyrazole?
The CAS number of 1,3-Dimethyl-4-nitro-1H-pyrazole is 3920-38-5.
What are the molecular formula and molecular weight of 1,3-Dimethyl-4-nitro-1H-pyrazole?
1,3-Dimethyl-4-nitro-1H-pyrazole has molecular formula C5H7N3O2 and molecular weight 141.128 g/mol.
What are the upstream and downstream products of 1,3-Dimethyl-4-nitro-1H-pyrazole?
For 1,3-Dimethyl-4-nitro-1H-pyrazole, Upstream Products: 1,3-Dimethylpyrazole, 5-Hydrazino-1,3-dimethyl-4-nitro-1H-pyrazole, 3-Methyl-4-nitro-1H-pyrazole; Downstream Products: 1,3-dimethyl-1H-pyrazol-4-amine, 1,3,5-Trimethyl-4-nitro-1H-pyrazole.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "1,3-Dimethyl-4-nitro-1H-pyrazole (CAS 3920-38-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1465337-3 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.