5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid
Also known as: 5-Methyl-1-phenylpyrazole-4-carboxylic acid, 3-Methyl-2-phenylpyrazole-4-carboxylic acid, AKOS PAO-0331, BUTTPARK 33\08-16, CBI-BB ZERO/006129, MFCD00067831, RARECHEM AL BE 1317, SALOR-INT L317624-1EA
5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 91138-00-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H10N2O2 and a molecular weight of 202.20900 g/mol. Key properties include a melting point of 166-170 °C(lit.), a boiling point of 382.9ºC at 760 mmHg, a density of 1.24 g/cm3 and a flash point of 185.4ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 91138-00-0
- Jingsj CID
- J-28738-7
- Molecular Formula
- C11H10N2O2
- Molecular Weight
- 202.20900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 166-170 °C(lit.) |
|---|---|
| Boiling Point | 382.9ºC at 760 mmHg |
| Density | 1.24 g/cm3 |
| Flash Point | 185.4ºC |
| Exact Mass | 202.07400 |
| PSA | 55.12000 |
| LogP | 1.87890 |
| Refractive Index | 1.617 |
GHS Safety & Compliance
- H315 — Causes skin 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 5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid?
The CAS number of 5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid is 91138-00-0.
What are the molecular formula and molecular weight of 5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid?
5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid has molecular formula C11H10N2O2 and molecular weight 202.20900 g/mol.
Is 5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid hazardous?
5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation.
What are the upstream and downstream products of 5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid?
For 5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid, Upstream Products: ETHYL 5-METHYL-1-PHENYL-1H-PYRAZOLE-4-CARBOXYLATE, Phenylhydrazine; Downstream Products: 5-Methyl-1-phenyl-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. "5-Methyl-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 91138-00-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28738-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.