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Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate

Also known as: (5,6-DIMETHYL-4-OXO-3,4-DIHYDRO-THIENO[2,3-D]PYRIMIDIN-2-YL)-ACETIC ACID METHYL ESTER, 1,4-Dihydro-5,6-dimethyl-4-oxo-thieno[2,3-d]pyrimidin-2-acetic acid methyl ester, Methyl 1,4-dihydro-5,6-dimethyl-4-oxothieno[2,3-d]pyrimidine-2-acetate, methyl 2-(5,6-dimethyl-4-oxo-3H-thieno[2,3-d]pyrimidin-2-yl)acetate

Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate (CAS 105219-75-8) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C11H12N2O3S and a molecular weight of 252.29000 g/mol. Key property: a density of 1.44g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
105219-75-8
Jingsj CID
J-1502164-4
Molecular Formula
C11H12N2O3S
Molecular Weight
252.29000 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026
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Physicochemical Properties

Density1.44g/cm3
Exact Mass252.05700
PSA100.55000
LogP1.72920
Refractive Index1.659

Customs & Trade Information

HS Code2934999090
Summary2934999090. other heterocyclic compounds. 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 Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate?

The CAS number of Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate is 105219-75-8.

What are the molecular formula and molecular weight of Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate?

Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate has molecular formula C11H12N2O3S and molecular weight 252.29000 g/mol.

What are the upstream and downstream products of Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate?

For Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate, Upstream Products: Ethyl 2-amino-4,5-dimethylthiophene-3-carboxylate, Methyl cyanoacetate.

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

Last updated:

How to cite: Jingsj. "Methyl 2-(5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)acetate (CAS 105219-75-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1502164-4 (accessed 2026-11-09).

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