4-Chloro-7-methylthieno[3,2-d]pyrimidine

4-氯-7-甲基噻吩并[3,2-d]嘧啶

Also known as: BUTTPARK 46\18-89, Thieno[3,2-d]pyrimidine, 4-chloro-7-methyl-, 4-Chloro-7-methylthieno[3,2-d]pyrimidine 97%, 7-CHLORO-3-METHYLTHIENO(3,2-D)PYRIMIDINE

4-Chloro-7-methylthieno[3,2-d]pyrimidine (CAS 175137-21-0) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C7H5ClN2S and a molecular weight of 184.646 g/mol. It is also known as BUTTPARK 46\18-89, Thieno[3,2-d]pyrimidine, 4-chloro-7-methyl- and 4-Chloro-7-methylthieno[3,2-d]pyrimidine 97%. Key properties include a melting point of 124ºC, a boiling point of 301.3±37.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 136.0±26.5 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 175137-21-0
Jingsj CID: J-1524134-0
Molecular Formula: C₇H₅ClN₂S
Chinese Name: 4-氯-7-甲基噻吩并[3,2-d]嘧啶
Molecular Weight: 184.646 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	124ºC
Boiling Point	301.3±37.0 °C at 760 mmHg
Density	1.4±0.1 g/cm3
Flash Point	136.0±26.5 °C

Frequently Asked Questions

What is the CAS number of 4-Chloro-7-methylthieno[3,2-d]pyrimidine?

The CAS number of 4-Chloro-7-methylthieno[3,2-d]pyrimidine is 175137-21-0.

What are the molecular formula and molecular weight of 4-Chloro-7-methylthieno[3,2-d]pyrimidine?

4-Chloro-7-methylthieno[3,2-d]pyrimidine has molecular formula C7H5ClN2S and molecular weight 184.646 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "4-Chloro-7-methylthieno[3,2-d]pyrimidine (CAS 175137-21-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524134-0 (accessed 2026-10-22).

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