(thieno[2,3-d]pyrimidin-4-ylthio)acetic acid

Also known as: 2-(thieno[2,3-d]pyrimidin-4-ylthio)acetic acid, 2-{thieno[2,3-d]pyrimidin-4-ylsulfanyl}acetic acid, thieno[2,3-d]pyrimidin-4-ylthioacetic acid, Acetic acid, 2-(thieno[2,3-d]pyrimidin-4-ylthio)-, hms1754h10

(thieno[2,3-d]pyrimidin-4-ylthio)acetic acid (CAS 18740-26-6) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C8H6N2O2S2 and a molecular weight of 226.27500 g/mol. Key properties include a boiling point of 455.5ºC at 760 mmHg, a density of 1.59g/cm3 and a flash point of 229.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 18740-26-6
Jingsj CID: J-1166847-6
Molecular Formula: C₈H₆N₂O₂S₂
Molecular Weight: 226.27500 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	455.5ºC at 760 mmHg
Density	1.59g/cm3
Flash Point	229.3ºC
Exact Mass	225.98700
PSA	116.62000
LogP	1.86800
Vapor Pressure	4.36E-09mmHg at 25°C
Refractive Index	1.738

Customs & Trade Information

HS Code	2934999090
Summary	2934999090. 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 (thieno[2,3-d]pyrimidin-4-ylthio)acetic acid?

The CAS number of (thieno[2,3-d]pyrimidin-4-ylthio)acetic acid is 18740-26-6.

What are the molecular formula and molecular weight of (thieno[2,3-d]pyrimidin-4-ylthio)acetic acid?

(thieno[2,3-d]pyrimidin-4-ylthio)acetic acid has molecular formula C8H6N2O2S2 and molecular weight 226.27500 g/mol.

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. "(thieno[2,3-d]pyrimidin-4-ylthio)acetic acid (CAS 18740-26-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1166847-6 (accessed 2026-11-09).

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