![Molecular structure of Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate (CAS 20481-33-8)](/images/chem_structures_svg/473/20481-33-8.svg)
Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate
Also known as: 1,3-diethyl 2-{[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene}propanedioate, 2-[[(2,5-dimethyl-3-pyrazolyl)amino]methylidene]propanedioic acid diethyl ester, Diethyl 2-((1,3-dimethyl-1H-pyrazol-5-ylamino)methylene)malonate, Ethyl 3-(1,3-dimethylpyrazol-5-ylamino)-2-(ethoxycarbonyl)acrylate, Propanedioic acid, 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylene]-, 1,3-diethyl ester, diethyl 2-[[(2,5-dimethylpyrazol-3-yl)amino]methylidene]propanedioate, diethyl 2-{[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylene}malonate
Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate (CAS 20481-33-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C13H19N3O4 and a molecular weight of 281.30800 g/mol. Key properties include a melting point of 85ºC, a boiling point of 366.7ºC at 760mmHg, a density of 1.18g/cm3 and a flash point of 175.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 20481-33-8
- Jingsj CID
- J-1495525-0
- Molecular Formula
- C13H19N3O4
- Molecular Weight
- 281.30800 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 85ºC |
|---|---|
| Boiling Point | 366.7ºC at 760mmHg |
| Density | 1.18g/cm3 |
| Flash Point | 175.6ºC |
| Exact Mass | 281.13800 |
| PSA | 82.45000 |
| LogP | 1.22350 |
| Vapor Pressure | 1.43E-05mmHg at 25°C |
| Refractive Index | 1.532 |
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 Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate?
The CAS number of Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate is 20481-33-8.
What are the molecular formula and molecular weight of Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate?
Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate has molecular formula C13H19N3O4 and molecular weight 281.30800 g/mol.
What are the upstream and downstream products of Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate?
For Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate, Upstream Products: 1,3-Dimethyl-1H-pyrazol-5-amine, Diethyl ethoxymethylenemalonate; Downstream Products: 4-Chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carbonyl chloride, ethyl 4-chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylate, 4-Chloro-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-5-carboxylic acid.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diethyl 2-[[(1,3-dimethyl-1H-pyrazol-5-yl)amino]methylidene]malonate (CAS 20481-33-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1495525-0 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.