1,3,5-Trimethyl-1H-pyrazole
Also known as: 1,3,5-Trimethylpyrazole, 1H-Pyrazole, 1,3,5-trimethyl-, 3,5-Dimethyl-N-methylpyrazole, MFCD00015536, Pyrazole, 1,3,5-trimethyl-
1,3,5-Trimethyl-1H-pyrazole (CAS 1072-91-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C6H10N2 and a molecular weight of 110.157 g/mol. Key properties include a melting point of 38-41 °C(lit.), a boiling point of 159.1±9.0 °C at 760 mmHg, a density of 1.0±0.1 g/cm3 and a flash point of 50.0±18.7 °C. It is classified under GHS with signal word Warning and hazard statements H228, H315 — Causes skin irritation and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1072-91-9
- Jingsj CID
- J-4737-0
- Molecular Formula
- C6H10N2
- Molecular Weight
- 110.157 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 38-41 °C(lit.) |
|---|---|
| Boiling Point | 159.1±9.0 °C at 760 mmHg |
| Density | 1.0±0.1 g/cm3 |
| Flash Point | 50.0±18.7 °C |
| Exact Mass | 110.084396 |
| PSA | 17.82000 |
| LogP | 1.09 |
| Vapor Pressure | 3.3±0.3 mmHg at 25°C |
| Refractive Index | 1.515 |
GHS Safety & Compliance
- H228
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Additional Information | [1]. Li QB, et al. Design, Synthesis, and Biological Activities of Novel 1,3,5-Trimethylpyrazole-Containing Malonamide Derivatives. Molecules. 2019 Feb 3;24(3). |
|---|
Frequently Asked Questions
What is the CAS number of 1,3,5-Trimethyl-1H-pyrazole?
The CAS number of 1,3,5-Trimethyl-1H-pyrazole is 1072-91-9.
What are the molecular formula and molecular weight of 1,3,5-Trimethyl-1H-pyrazole?
1,3,5-Trimethyl-1H-pyrazole has molecular formula C6H10N2 and molecular weight 110.157 g/mol.
Is 1,3,5-Trimethyl-1H-pyrazole hazardous?
1,3,5-Trimethyl-1H-pyrazole has GHS signal word Warning and hazard statements H228; H315 — Causes skin irritation; H319 — Causes serious eye irritation.
What are the upstream and downstream products of 1,3,5-Trimethyl-1H-pyrazole?
For 1,3,5-Trimethyl-1H-pyrazole, Upstream Products: 3,5-Dimethylpyrazole, Dimethyl Carbonate, 4-Aminopent-3-en-2-one; Downstream Products: 4-Iodo-1,3,5-trimethyl-1H-pyrazole, 1,3,5-Trimethyl-1H-pyrazole-4-carboxylic acid, 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. "1,3,5-Trimethyl-1H-pyrazole (CAS 1072-91-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4737-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.