[1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one

Also known as: 6H-[1,2,5]thiadiazolo[3,4-d]pyrimidin-7-one, (1,2,5)thiadiazolo(3,4-d)pyrimidin-7(6H)-one, (1,2,5)thiadiazolo(3,4-d)pyrimidin-7(3H)-one, 7-Oxo-[1,2,5]thiadiazolo[3,4-d]pyrimidine(6H)

[1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one (CAS 7598-41-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H2N4OS and a molecular weight of 154.15000 g/mol. Key properties include a boiling point of 267.1ºC at 760mmHg, a density of 2.19g/cm3 and a flash point of 115.4ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 7598-41-6
Jingsj CID: J-1570711-6
Molecular Formula: C₄H₂N₄OS
Molecular Weight: 154.15000 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	267.1ºC at 760mmHg
Density	2.19g/cm3
Flash Point	115.4ºC
Exact Mass	153.99500
PSA	100.03000
LogP	0.18690

Frequently Asked Questions

What is the CAS number of [1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one?

The CAS number of [1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one is 7598-41-6.

What are the molecular formula and molecular weight of [1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one?

[1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one has molecular formula C4H2N4OS and molecular weight 154.15000 g/mol.

What are the upstream and downstream products of [1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one?

For [1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one, Upstream Products: 4,5-Diamino-6-hydroxypyrimidine, Triethyl orthoformate.

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. "[1,2,5]Thiadiazolo[3,4-d]pyrimidin-7(6H)-one (CAS 7598-41-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1570711-6 (accessed 2026-11-09).

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