Skip to product details

Chemical product profile

HONGKUN / PRODUCT DIRECTORY

(S)-3-Methylheptanoic acid | CAS 59614-85-6

A branched aliphatic carboxylic acid with an S-configured methyl-bearing centre at C3, appearing as a chiral intermediate in published immunoregulatory-compound research and requiring positional as well as enantiomeric identification.

CAS59614-85-6
Molecular formulaC8H16O2
Molecular weight144.21 g/mol

Product overview

The methyl branch in (S)-3-methylheptanoic acid creates a defined stereocentre one carbon beyond the carboxyl α position. CAS 59614-85-6 identifies the 3S free acid, not an ester, a resolving-agent salt or the opposite enantiomer. Its eight-carbon saturated framework makes branch position and stereochemistry the principal identity distinctions. For sourcing evaluation, buyers should define the required 3S composition and confirm that a general acid assay is supplemented by evidence distinguishing the relevant structural and stereochemical alternatives.

Chemical identity

Chemical name
(S)-3-Methylheptanoic acid
CAS number
59614-85-6
Molecular formula
C8H16O2
Molecular weight
144.21 g/mol

Application context

(S)-3-Methylheptanoic acid appears as an intermediate in research on an immunoregulatory compound series. The reported preparation separates the S acid through a resolving-agent salt before recovering the free acid. Specify the 3S free acid and assess enantiomeric composition separately from total acid content. If the selected manufacturing route uses resolution, discuss relevant resolving-agent residues and controls for the receiving synthetic step.

Chemistry and synthetic role

The molecule contains one carboxylic acid and a saturated, methyl-branched chain. C3 is S; the branch position distinguishes it from other methylheptanoic acids even when formula and molecular weight are identical.

Quality review

Establish the 3S composition

Require a suitable stereochemical method; acid content alone cannot distinguish S from R.

Locate the methyl branch

Use identity evidence that differentiates the 3-methyl structure from other positional isomers.

Review route-dependent residues

If resolution is used, discuss relevant residual resolving agents and confirm recovery of the free acid.

Preparing a specification

Request CAS 59614-85-6 as the 3S free acid. Specify chemical assay, a positional-identity method and the required enantiomeric criterion. Include route-related residues only after discussing the selected manufacturer's process.

Packaging and storage

Confirm packaging format, net weight and transport arrangements for the selected grade, quantity and destination. Agree storage and handling conditions using the actual supplied material’s SDS and label.

Documentation

Request COA, SDS and structural identification. Confirm availability of chiral results and, where applicable, information on residual resolving agents and the free-acid assay basis.

Procurement questions

Is the stereocentre adjacent to the carboxyl group?

It is at C3, beyond the α carbon; the 3-methyl position must remain explicit.

What type of synthesis uses this chiral acid?

It appears as an intermediate in research on an immunoregulatory compound series, where the 3S acid fragment is specified.

Should a resolving-agent test always be required?

Its relevance depends on the actual route. Discuss the process before selecting residue controls.

Technical sources
  1. PubChem CID 10290853: properties and CAS synonymsNCBI / NLM / NIH
  2. WO1993022269A1 — Process for preparation of 3(S)-methylheptanoic acidWIPO patent publication / Google Patents