4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine

4-氯-2-甲基-5,6,7,8-四氢[1]苯并噻吩[2,3-d]嘧啶

Also known as: 4-CHLORO-2-METHYL-5,6,7,8-TETRAHYDROBENZO[4,5]THIENO[2,3-D]PYRIMIDINE, 4-CHLORO-2-METHYL-5,6,7,8-TETRAHYDRO[1]BENZOTHIENO[2,3-D]PYRIMIDINE, 4-Chloro-2-methyl-5,6,7,8-tetrahydrobenzo[b]thieno[2,3-d]pyrimidine, 4-chloro-2-methyl-5,6,7,8-tetrahydro<1>benzothieno<2,3-d>pyrimidine, [1]BENZOTHIENO[2,3-D]PYRIMIDINE,4-CHLORO-5,6,7,8-TETRAHYDRO-2-METHYL-, AKOS 92583, IFLAB-BB F0307-0219

4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine (CAS 81765-97-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H11ClN2S and a molecular weight of 238.73600 g/mol. It is also known as 4-CHLORO-2-METHYL-5,6,7,8-TETRAHYDROBENZO[4,5]THIENO[2,3-D]PYRIMIDINE, 4-CHLORO-2-METHYL-5,6,7,8-TETRAHYDRO[1]BENZOTHIENO[2,3-D]PYRIMIDINE and 4-Chloro-2-methyl-5,6,7,8-tetrahydrobenzo[b]thieno[2,3-d]pyrimidine. Key properties include a melting point of 94ºC, a boiling point of 310.9ºC at 760 mmHg, a density of 1.367g/cm3 and a flash point of 141.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
81765-97-1
Jingsj CID
J-1524312-8
Molecular Formula
C11H11ClN2S
Chinese Name
4-氯-2-甲基-5,6,7,8-四氢[1]苯并噻吩[2,3-d]嘧啶
Molecular Weight
238.73600 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point94ºC
Boiling Point310.9ºC at 760 mmHg
Density1.367g/cm3
Flash Point141.8ºC

Frequently Asked Questions

What is the CAS number of 4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine?

The CAS number of 4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine is 81765-97-1.

What are the molecular formula and molecular weight of 4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine?

4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine has molecular formula C11H11ClN2S and molecular weight 238.73600 g/mol.

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

Last updated:

How to cite: Jingsj. "4-chloro-2-methyl-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidine (CAS 81765-97-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1524312-8 (accessed 2026-10-22).

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