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HONGKUN / PRODUCT DIRECTORY

(6S)-4-Oxotetrahydropyrrolopyrimidine-6-carboxylic acid | CAS 1190392-22-3

A defined 6S fused heterocyclic acid contributes the pyrrolopyrimidinone fragment in published vibegron chemistry. Qualification must address its enantiomeric composition and free-acid form before assessing suitability for the subsequent amide-forming step.

CAS1190392-22-3
Molecular formulaC8H8N2O3
Molecular weight180.16 g/mol

Product overview

The carboxylic acid attached to a defined 6S centre makes this fused nitrogen heterocycle a distinct coupling component. CAS 1190392-22-3 refers to the 4-oxo pyrrolopyrimidine acid, with formula C8H8N2O3, rather than the final vibegron molecule or an unspecified salt. A published preparation connects this acid with vibegron formation. Because the stereocentre is already present in the input, chemical purity and chiral purity should be treated as separate qualification questions. The enquiry should state the free acid and the required 6S identity, accompanied by a structure approved for the intended route. Agree the assay basis and the method used to exclude the opposite enantiomer and relevant related heterocycles.

Chemical identity

Chemical name
(6S)-4-Oxo-4,6,7,8-tetrahydropyrrolo[1,2-a]pyrimidine-6-carboxylic acid
CAS number
1190392-22-3
Molecular formula
C8H8N2O3
Molecular weight
180.16 g/mol

Application context

In published vibegron synthesis, the 6S acid supplies the fused pyrrolopyrimidinone fragment during amide formation. Match the free-acid form and absolute configuration across the RFQ, specification and batch documents. A suitable chiral method should quantify the opposite enantiomer, alongside analysis of relevant heterocyclic related substances. If a salt is proposed, review its composition, charging basis and compatibility with the coupling step separately.

Chemistry and synthetic role

The acid function supplies the acyl component in the documented amide-forming sequence. The fused 4-oxo heterocycle and the 6S centre are retained identity elements and must be distinguished from protection or salt-form choices.

Quality review

Confirm absolute configuration

Use a qualified 6S reference and an appropriate chiral method; an achiral HPLC result alone is insufficient.

Define free acid or proposed salt

Match the formula and counterion status to the requested acid. Evaluate any alternative salt separately.

Review heterocycle-related impurities

Agree chromatographic specificity for the actual acid and relevant route-derived heterocycles rather than relying only on total assay.

Preparing a specification

Specify CAS 1190392-22-3, 6S, free acid and an approved structure. State chiral and chemical methods, assay basis and relevant heterocyclic impurity criteria for the coupling step.

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 chiral chromatograms and absolute-configuration evidence, plus confirmation of acid or counterion content.

Procurement questions

Is chemical purity enough for the coupling input?

No. The defined 6S material also needs a suitable assessment of enantiomeric composition.

Can a sodium salt be treated as the same supplied form?

No. A proposed salt requires its own identity, composition and process review.

Does this precursor contain the full vibegron structure?

No. It supplies one heterocyclic acid fragment in the documented sequence.

Technical sources
  1. PubChem CID 57907501: identity properties and CAS synonymsNCBI / PubChem
  2. (S)-4-Oxo-4,6,7,8-tetrahydropyrrolo[1,2-a]pyrimidine-6-carboxylic acidChemScene via Sigma-Aldrich
  3. CN121405707A: Preparation of (6S)-4-oxo tetrahydropyrrolopyrimidine carboxylic acidCNIPA via Google Patents