2-(Methylthio)-2-thiazoline

Also known as: 2-(Methylthio)thiazoline, 2-(Methylmercapto)-2-thiazoline, 2-(Methylthio)-4,5-dihydro-1,3-thiazole, 2-(Methylthio)-4,5-dihydrothiazole, 2-Methylsulfanyl-4,5-dihydro-1,3-thiazole, 2-Methylsulfanyl-4,5-dihydrothiazoline, 4,5-Dihydro-2-(methylthio)-thiazole, 2-Thiazoline, 2-(methylthio)-, Thiazole, 4,5-dihydro-2-(methylthio)-, NSC196203, MFCD00005312, EINECS 243-447-9

2-(Methylthio)-2-thiazoline (CAS 19975-56-5) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C4H7NS2 and a molecular weight of 133.235 g/mol. Key properties include a boiling point of 216.5±9.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 84.7±18.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 19975-56-5
Jingsj CID: J-1027535-1
Molecular Formula: C₄H₇NS₂
Molecular Weight: 133.235 g/mol
Category: Pharma Intermediates
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	216.5±9.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	84.7±18.7 °C
Exact Mass	133.001984
PSA	62.96000
LogP	0.52
Vapor Pressure	0.2±0.4 mmHg at 25°C
Refractive Index	1.654

Customs & Trade Information

HS Code	2934100090
Summary	2934100090 other compounds containing an unfused thiazole ring (whether or not hydrogenated) in the structure VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:20.0%

Frequently Asked Questions

What is the CAS number of 2-(Methylthio)-2-thiazoline?

The CAS number of 2-(Methylthio)-2-thiazoline is 19975-56-5.

What are the molecular formula and molecular weight of 2-(Methylthio)-2-thiazoline?

2-(Methylthio)-2-thiazoline has molecular formula C4H7NS2 and molecular weight 133.235 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. "2-(Methylthio)-2-thiazoline (CAS 19975-56-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1027535-1 (accessed 2026-11-09).

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