5-Amino-3-methyl-1-phenylpyrazole
Also known as: 5-Amino-3-methyl-1-phenylpyrazole, 3-Methyl-1-phenyl-1H-pyrazol-5-amine, 1-Phenyl-3-methyl-5-aminopyrazole, 5-Amino-3-methyl-1-phenyl-1H-pyrazole, 3-Methyl-1-phenyl-5-aminopyrazole, 5-Methyl-2-phenylpyrazol-3-amine, 1H-Pyrazol-5-amine, 3-methyl-1-phenyl-
5-Amino-3-methyl-1-phenylpyrazole (CAS 1131-18-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H11N3 and a molecular weight of 173.214 g/mol. Key properties include a melting point of 114-117 °C(lit.), a boiling point of 333.0±22.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 155.2±22.3 °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.
- 1131-18-6
- Jingsj CID
- J-41216-8
- Molecular Formula
- C10H11N3
- Molecular Weight
- 173.214 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 114-117 °C(lit.) |
|---|---|
| Boiling Point | 333.0±22.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 155.2±22.3 °C |
| Exact Mass | 173.095291 |
| PSA | 43.84000 |
| LogP | 1.96 |
| Vapor Pressure | 0.0±0.7 mmHg at 25°C |
| Refractive Index | 1.625 |
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 5-Amino-3-methyl-1-phenylpyrazole?
The CAS number of 5-Amino-3-methyl-1-phenylpyrazole is 1131-18-6.
What are the molecular formula and molecular weight of 5-Amino-3-methyl-1-phenylpyrazole?
5-Amino-3-methyl-1-phenylpyrazole has molecular formula C10H11N3 and molecular weight 173.214 g/mol.
Is 5-Amino-3-methyl-1-phenylpyrazole hazardous?
5-Amino-3-methyl-1-phenylpyrazole 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 5-Amino-3-methyl-1-phenylpyrazole?
For 5-Amino-3-methyl-1-phenylpyrazole, Upstream Products: Phenylhydrazine, 3-Oxobutanenitrile, 3-Aminocrotononitrile; Downstream Products: 6-amino-3-methyl-4-(3-nitrophenyl)-1-phenyl-1H-pyrazolo[3,4-b]pyridine-5-carbonitrile, 3-Methyl-1-phenyl-4-pyridin-3-yl-1H-indeno[1,2-b]pyrazolo[4,3-e]pyridin-5-one, 4-Ethyl-3-methyl-1-phenyl-1H-indeno[1,2-b]pyrazolo[4,3-e]pyridin-5-one.
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-Amino-3-methyl-1-phenylpyrazole (CAS 1131-18-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-41216-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.