2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one

Also known as: 2,5-Dimethyl-4H-pyrazolo[1,5-a]pyrimidin-7-one, 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7-one, 2,5-Dimethyl-4,7-dihydropyrazolo[1,5-a]pyrimidin-7-one, 2,5-dimethyl-7-oxopyrazolo[1,5-a]pyrimidine, MFCD00210153

2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 98488-10-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H9N3O and a molecular weight of 163.17700 g/mol. Key properties include a melting point of 252-254ºC, a boiling point of 266.3ºC at 760mmHg, a density of 1.35g/cm3 and a flash point of 114.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 98488-10-9
Jingsj CID: J-3488-8
Molecular Formula: C₈H₉N₃O
Molecular Weight: 163.17700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	252-254ºC
Boiling Point	266.3ºC at 760mmHg
Density	1.35g/cm3
Flash Point	114.9ºC
Exact Mass	163.07500
PSA	47.25000
LogP	0.76340
Refractive Index	1.671

Customs & Trade Information

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. 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 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one?

The CAS number of 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one is 98488-10-9.

What are the molecular formula and molecular weight of 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one?

2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one has molecular formula C8H9N3O and molecular weight 163.17700 g/mol.

What are the upstream and downstream products of 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one?

For 2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one, Upstream Products: Ethyl acetoacetate, 5-Methyl-1H-pyrazol-3-amine; Downstream Products: 7-Chloro-2,5-dimethylpyrazolo[1,5-a]pyrimidine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "2,5-Dimethylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 98488-10-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3488-8 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.