4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one

4-甲氧基-5H-嘧啶并[4,5-b][1,4]噻嗪-6(7H)-酮

Also known as: 4-Methoxypyrimido<4,5-b>-1,4-thiazin-6-on, 4-methoxy-6-oxopyrimido<4,5-b><1,4>thiazine, 5H-Pyrimido(4,5-b)(1,4)thiazin-6(7H)-one,4-methoxy, HMS2303I10, 4-methoxy-5H,7H-pyrimido[4,5-b][1,4]thiazin-6-one

4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one (CAS 16025-11-9) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H7N3O2S and a molecular weight of 197.21400 g/mol. It is also known as 4-Methoxypyrimido<4,5-b>-1,4-thiazin-6-on, 4-methoxy-6-oxopyrimido<4,5-b><1,4>thiazine and 5H-Pyrimido(4,5-b)(1,4)thiazin-6(7H)-one,4-methoxy. Key properties include a boiling point of 450.4ºC at 760mmHg, a density of 1.421g/cm3 and a flash point of 226.2ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16025-11-9
Jingsj CID
J-1498787-4
Molecular Formula
C7H7N3O2S
Chinese Name
4-甲氧基-5H-嘧啶并[4,5-b][1,4]噻嗪-6(7H)-酮
Molecular Weight
197.21400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point450.4ºC at 760mmHg
Density1.421g/cm3
Flash Point226.2ºC

Frequently Asked Questions

What is the CAS number of 4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one?

The CAS number of 4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one is 16025-11-9.

What are the molecular formula and molecular weight of 4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one?

4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one has molecular formula C7H7N3O2S and molecular weight 197.21400 g/mol.

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

Last updated:

How to cite: Jingsj. "4-methoxy-5H-pyrimido[4,5-b][1,4]thiazin-6(7H)-one (CAS 16025-11-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1498787-4 (accessed 2026-10-25).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.