3-Amino-1H-pyrazole-4-carboxylic acid
Also known as: 3-Amino-4-pyrazolecarboxylic acid, 3-Aminopyrazole-4-carboxylic acid, 3-Amino-4-carboxypyrazole, 5-Amino-4-pyrazolecarboxylic acid, 1H-Pyrazole-4-carboxylic acid, 3-amino-, MFCD00005239, EINECS 255-493-7
3-Amino-1H-pyrazole-4-carboxylic acid (CAS 41680-34-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H5N3O2 and a molecular weight of 127.101 g/mol. Key properties include a melting point of 135 °C (dec.)(lit.), a boiling point of 502.7±35.0 °C at 760 mmHg, a density of 1.7±0.1 g/cm3 and a flash point of 257.8±25.9 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 41680-34-6
- Jingsj CID
- J-46181-4
- Molecular Formula
- C4H5N3O2
- Molecular Weight
- 127.101 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 135 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 502.7±35.0 °C at 760 mmHg |
| Density | 1.7±0.1 g/cm3 |
| Flash Point | 257.8±25.9 °C |
| Exact Mass | 127.038177 |
| PSA | 92.00000 |
| LogP | 0.40 |
| Vapor Pressure | 0.0±1.4 mmHg at 25°C |
| Refractive Index | 1.720 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
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 3-Amino-1H-pyrazole-4-carboxylic acid?
The CAS number of 3-Amino-1H-pyrazole-4-carboxylic acid is 41680-34-6.
What are the molecular formula and molecular weight of 3-Amino-1H-pyrazole-4-carboxylic acid?
3-Amino-1H-pyrazole-4-carboxylic acid has molecular formula C4H5N3O2 and molecular weight 127.101 g/mol.
Is 3-Amino-1H-pyrazole-4-carboxylic acid hazardous?
3-Amino-1H-pyrazole-4-carboxylic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 3-Amino-1H-pyrazole-4-carboxylic acid?
For 3-Amino-1H-pyrazole-4-carboxylic acid, Upstream Products: Ethyl 3-amino-1H-pyrazole-4-carboxylate; Downstream Products: 6-bromopyrazolo[1,5-a]pyrimidine-3-carboxylic acid, 6-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid, Methyl 3-amino-1H-pyrazole-4-carboxylate.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3-Amino-1H-pyrazole-4-carboxylic acid (CAS 41680-34-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46181-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.