1-Methyl-1H-pyrazole-5-carboxylic acid
Also known as: 1-Methylpyrazole-5-carboxylic acid, 1-Methyl-1H-pyrazole-5-carboxylic acid 97%, 1-Methyl-pyrazole-5-carboxylicacid, 2-Methyl-2H-pyrazole-3-carboxylic acid, 2-methylpyrazole-3-carboxylic acid, N-Methylpyrazole-3-carboxylic acid, MFCD00464253
1-Methyl-1H-pyrazole-5-carboxylic acid (CAS 16034-46-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O2 and a molecular weight of 126.11 g/mol. Key properties include a melting point of 223.5-224.5, a boiling point of 306.9±15.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 139.4±20.4 °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.
- 16034-46-1
- Jingsj CID
- J-49799-4
- Molecular Formula
- C5H6N2O2
- Molecular Weight
- 126.11 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 223.5-224.5 |
|---|---|
| Boiling Point | 306.9±15.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 139.4±20.4 °C |
| Exact Mass | 126.042931 |
| PSA | 55.12000 |
| LogP | -0.36 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.591 |
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 1-Methyl-1H-pyrazole-5-carboxylic acid?
The CAS number of 1-Methyl-1H-pyrazole-5-carboxylic acid is 16034-46-1.
What are the molecular formula and molecular weight of 1-Methyl-1H-pyrazole-5-carboxylic acid?
1-Methyl-1H-pyrazole-5-carboxylic acid has molecular formula C5H6N2O2 and molecular weight 126.11 g/mol.
Is 1-Methyl-1H-pyrazole-5-carboxylic acid hazardous?
1-Methyl-1H-pyrazole-5-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 1-Methyl-1H-pyrazole-5-carboxylic acid?
For 1-Methyl-1H-pyrazole-5-carboxylic acid, Upstream Products: 1-Methylpyrazole, Carbon dioxide, 1H-Pyrazole-3-carboxylic acid; Downstream Products: 1-Methyl-4-nitro-1H-pyrazole-5-carboxylic acid, 1H-Pyrazole-5-carboxamide, 4-amino-1-methyl- (9CI), (1-Methyl-1H-pyrazol-5-yl)methanol.
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-pyrazole-5-carboxylic acid (CAS 16034-46-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-49799-4 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.