Skip to product details

Chemical product profile

HONGKUN / PRODUCT DIRECTORY

4-Methylthiazole-5-carbaldehyde (MFTA) | CAS 82294-70-0

Cefditoren intermediate literature identifies this precisely substituted thiazole aldehyde as a building block. The adjacent 4-methyl and 5-formyl groups distinguish it from other thiazole aldehydes and guide identity and related-substance review.

CAS82294-70-0
Molecular formulaC5H5NOS
Molecular weight127.17 g/mol

Product overview

A methyl group at thiazole C4 and an aldehyde at C5 define this compact sulfur- and nitrogen-containing building block. CAS 82294-70-0 is used in cefditoren pivoxil intermediate chemistry, where it provides the 4-methylthiazole fragment. Its formyl carbon lies outside the aromatic ring, providing a functional connection for subsequent synthesis. The corresponding thiazole alcohol and ester occur in preparation chemistry and are useful related substances to consider when reviewing a proposed source. Qualification should establish both the 4-methyl/5-formyl arrangement and the quantity of the target aldehyde. Set route-related residue controls according to the selected preparation and the receiving transformation.

Chemical identity

Chemical name
4-Methylthiazole-5-carbaldehyde
CAS number
82294-70-0
Molecular formula
C5H5NOS
Molecular weight
127.17 g/mol

Application context

Cefditoren pivoxil intermediate chemistry uses this aldehyde to supply the 4-methylthiazole fragment. The 4-methyl/5-formyl arrangement is essential when specifying the building block. Preparation routes include corresponding ester and hydroxymethyl precursors, so an appropriate related-substances method should distinguish those functional states where relevant. Identify the downstream transformation and agree aldehyde assay, positional-isomer controls and any preparation-specific residue requirements with the proposed source.

Chemistry and synthetic role

The thiazole has sulfur and nitrogen within the ring; the formyl carbon lies outside it. The 4-methyl/5-formyl arrangement is fixed and should not be confused with 5-methylthiazole-4-carbaldehyde.

Quality review

Check ring numbering

Use spectra or a qualified reference to establish 4-methyl/5-formyl identity; mass alone cannot resolve positional isomers.

Separate aldehyde and precursors

Assess the method’s ability to distinguish the corresponding hydroxymethyl and ester compounds when relevant to the proposed source.

Make residue controls route-specific

Ask about preparation-related metals only when the source route or downstream chemistry creates a reason to control them.

Preparing a specification

State MFTA with CAS and ring numbering, specify aldehyde assay and route-relevant alcohol/ester or isomer criteria, and identify any justified residue requirement.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, order quantity and destination. Request the applicable SDS and label to establish storage and handling conditions.

Documentation

Request the proposed specification, batch COA and current SDS. Confirm availability of the analytical methods and batch evidence relevant to the intended process. Request the identity spectrum and related-substances chromatogram; confirm route-specific residue information where needed.

Procurement questions

Is this the 5-methyl-4-formyl isomer?

No. This CAS is 4-methylthiazole-5-carbaldehyde.

Which synthesis uses this thiazole fragment?

Cefditoren pivoxil intermediate synthesis uses the 4-methylthiazole-5-carbaldehyde fragment.

Must every grade have a trace-metal limit?

Only when justified by the source process and receiving application; it is not an automatic universal requirement.

Technical sources
  1. PubChem CID 581339: identity properties and CAS synonymsNCBI / PubChem
  2. 4-Methylthiazole-5-carboxaldehyde, M1812Tokyo Chemical Industry
  3. CA2483482A1: Preparation of 4-methyl-thiazole-5-carbaldehyde intermediateCIPO publication via Google Patents