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

Also known as: 5-methyl-4H-pyrazolo[1,5-a]pyrimidin-7-one, 5-methyl-4H,7H-pyrazolo[1,5-a]pyrimidin-7-one, 7-oxo-5-methyl-4,7-dihydro-pyrazolo[1,5-a]pyrimidine, Pyrazolo[1,5-a]pyrimidin-7(4H)-one, 5-methyl-, 5-methyl-4H-pyrazolo[1,5-a]pyrimidin-7-on

5-methylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 29274-35-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H7N3O and a molecular weight of 149.15000 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 29274-35-9
Jingsj CID: J-1498991-4
Molecular Formula: C₇H₇N₃O
Molecular Weight: 149.15000 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

Request MSDS / TDS

No offers for this compound yet.

Request a quote

Physicochemical Properties

Exact Mass	149.05900
PSA	50.16000
LogP	0.33100

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 5-methylpyrazolo[1,5-a]pyrimidin-7(4H)-one?

The CAS number of 5-methylpyrazolo[1,5-a]pyrimidin-7(4H)-one is 29274-35-9.

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

5-methylpyrazolo[1,5-a]pyrimidin-7(4H)-one has molecular formula C7H7N3O and molecular weight 149.15000 g/mol.

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

For 5-methylpyrazolo[1,5-a]pyrimidin-7(4H)-one, Upstream Products: Ethyl acetoacetate, 3-Aminopyrazole; Downstream Products: 7-chloro-5-methylpyrazolo[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. "5-methylpyrazolo[1,5-a]pyrimidin-7(4H)-one (CAS 29274-35-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1498991-4 (accessed 2026-11-09).

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