6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one

Also known as: 6-Chloro-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one, 6-Chloro-1,7-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one, 6-Chloro-1,2-dihydropyrazolo[3,4-d]pyrimidin-4-one, 4H-Pyrazolo[3,4-d]pyrimidin-4-one, 6-chloro-1,5-dihydro-

6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one (CAS 42754-97-2) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H3ClN4O and a molecular weight of 170.55700 g/mol. Key properties include a boiling point of 312.1ºC at 760 mmHg, a density of 2.09g/cm3 and a flash point of 142.6ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 42754-97-2
Jingsj CID: J-1500301-7
Molecular Formula: C₅H₃ClN₄O
Molecular Weight: 170.55700 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	312.1ºC at 760 mmHg
Density	2.09g/cm3
Flash Point	142.6ºC
Exact Mass	170.00000
PSA	74.43000
LogP	0.29960
Refractive Index	1.91

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 6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one?

The CAS number of 6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one is 42754-97-2.

What are the molecular formula and molecular weight of 6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one?

6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one has molecular formula C5H3ClN4O and molecular weight 170.55700 g/mol.

What are the upstream and downstream products of 6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one?

For 6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one, Upstream Products: 4,6-Dichloro-1H-pyrazolo[3,4-d]pyrimidine, Oxipurinol; Downstream Products: 6-Amino-1H-pyrazolo[3,4-d]pyrimidin-4(7H)-one, 4-Hydroxy-6-mercaptopyrazolo[3,4-d]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. "6-Chloro-1,5-dihydro-4H-pyrazolo[3,4-d]pyrimidin-4-one (CAS 42754-97-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1500301-7 (accessed 2026-11-09).

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