1,3-Diphenyl-1H-pyrazole-4-carbaldehyde
Also known as: 1,3-Diphenyl-4-pyrazolecarboxaldehyde, 1,3-Diphenylpyrazole-4-carboxaldehyde, 1,3-Diphenyl-1H-pyrazole-4-carboxaldehyde, 1,3-Diphenyl-1H-pyrazol-4-carboxaldehyde, 1,3-Diphenyl-4-pyrazolecarbaldehyde, 1,3-Diphenylpyrazole-4-carbaldehyde
1,3-Diphenyl-1H-pyrazole-4-carbaldehyde (CAS 21487-45-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C16H12N2O and a molecular weight of 248.27900 g/mol. Key properties include a melting point of 142-146ºC, a boiling point of 442.2ºC at 760mmHg, a density of 1.14g/cm3 and a flash point of 221.2ºC. It is classified under GHS with signal word Danger and hazard statements H315 — Causes skin irritation, H318 — Causes serious eye damage and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 21487-45-6
- Jingsj CID
- J-1495267-1
- Molecular Formula
- C16H12N2O
- Molecular Weight
- 248.27900 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 142-146ºC |
|---|---|
| Boiling Point | 442.2ºC at 760mmHg |
| Density | 1.14g/cm3 |
| Flash Point | 221.2ºC |
| Exact Mass | 248.09500 |
| PSA | 34.89000 |
| LogP | 3.35180 |
| Vapor Pressure | 5.13E-08mmHg at 25°C |
| Refractive Index | 1.621 |
| Storage Conditions | 2-8°C |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H318 — Causes serious eye damage
- 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 1,3-Diphenyl-1H-pyrazole-4-carbaldehyde?
The CAS number of 1,3-Diphenyl-1H-pyrazole-4-carbaldehyde is 21487-45-6.
What are the molecular formula and molecular weight of 1,3-Diphenyl-1H-pyrazole-4-carbaldehyde?
1,3-Diphenyl-1H-pyrazole-4-carbaldehyde has molecular formula C16H12N2O and molecular weight 248.27900 g/mol.
Is 1,3-Diphenyl-1H-pyrazole-4-carbaldehyde hazardous?
1,3-Diphenyl-1H-pyrazole-4-carbaldehyde has GHS signal word Danger and hazard statements H315 — Causes skin irritation; H318 — Causes serious eye damage; H335 — May cause respiratory irritation.
What are the upstream and downstream products of 1,3-Diphenyl-1H-pyrazole-4-carbaldehyde?
For 1,3-Diphenyl-1H-pyrazole-4-carbaldehyde, Upstream Products: Ethanone, 1-phenyl-, 2-phenylhydrazone, N,N-Dimethylformamide, Acetophenone; Downstream Products: 1,3-DIPHENYLPYRAZOLE-4-PROPIONIC ACID, 1,3-Diphenyl-1H-pyrazole-4-carboxylic acid, 1,3,4-Triphenyl-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-Diphenyl-1H-pyrazole-4-carbaldehyde (CAS 21487-45-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495267-1 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.