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HONGKUN / PRODUCT DIRECTORY

4-Methylthiazole-2(3H)-thione | CAS 5685-06-3

An oxygen-free sulfur heterocycle also described as 4-methylthiazole-2-thiol. The thiol/thione identity, methyl position and separate GC/HPLC profiles define this reagent for specialized heterocyclic research.

CAS5685-06-3
Molecular formulaC4H5NS2
Molecular weight131.2 g/mol

Product overview

This thiazole combines a methyl group at C4 with an exocyclic sulfur site at C2. Thiol and thione naming reflect alternative tautomeric descriptions of the parent structure. The molecule contains no oxygen, which distinguishes it from N-hydroxythiazolethiones used in other reagent systems. Qualification should consequently begin with the exact structure rather than the shortened name “methylthiazole”. Chromatographic method choice is another practical point: GC area purity and HPLC area purity are distinct measurements and should be reported with their method conditions. A purchasing specification can then define the related sulfur compounds and residual solvents relevant to the intended research transformation.

Chemical identity

Chemical name
4-Methylthiazole-2(3H)-thione
CAS number
5685-06-3
Molecular formula
C4H5NS2
Molecular weight
131.2 g/mol

Application context

The material is used as a specialized laboratory reagent in heterocyclic chemistry. Its thiol/thione site and C4 methyl substituent make it a defined starting structure for work on sulfur-containing thiazole derivatives. The chosen derivative programme should establish which site and chemical form are required.

For sample evaluation, compare structural data with the expected parent thione and agree the chromatographic method before comparing purity figures. If the intended route calls for an N-hydroxy derivative, specify that separately with its own structure and identifier. For the present oxygen-free reagent, relevant qualification data include identity, GC/HPLC profile and any route-specific solvent or sulfur-related impurity criteria.

Chemistry and synthetic role

The ring has one nitrogen and one sulfur, with another sulfur at C2. The thione representation carries N–H; the thiol representation places the hydrogen on the exocyclic sulfur.

Quality review

Confirm the oxygen-free parent

Use formula and structural data to distinguish N-hydroxy or other substituted thiazolethiones.

Name the chromatographic method

Specify GC or HPLC and retain the result basis when comparing lots.

Review related sulfur species

Agree the components and reporting limits relevant to the derivative programme.

Preparing a specification

Specify CAS 5685-06-3, the C4 methyl/C2 thione structure and GC or HPLC acceptance criteria. Add relevant sulfur-related compounds and residual solvents; identify any required sample dissolution conditions.

Packaging and storage

Packaging, closure and net weight are agreed for the selected grade, order quantity and destination. Confirm storage and transport requirements against the actual supplier SDS.

Documentation

Request a batch COA, specification, identity data and SDS. Confirm the availability of the analytical methods and any application-specific impurity results with the proposed supplier.

Procurement questions

Are thiol and thione names related?

Yes, they represent tautomeric descriptions of this parent compound.

Is it an N-hydroxythiazolethione reagent?

No. Its formula contains no oxygen; an N-hydroxy derivative is a separate substance.

Can GC and HPLC percentages be compared directly?

Compare results only with their analytical method and calculation basis; the methods can resolve different components.

Technical sources
  1. 4-Methyl-2-thio-1,3-thiazole OR18300 certificateApollo Scientific
  2. 4-Methyl-2(3H)-thiazolethione SDSIndagoo Research Chemicals
  3. Quinazoline derivatives as TAM family kinase inhibitors, Preparation 15HK1228287A1