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HONGKUN / PRODUCT DIRECTORY

(R)-3-Aminobutanoic acid | CAS 3775-73-3

A stereodefined β-amino acid whose R configuration matters both in chiral building-block selection and published plant-immunity research, where R-BABA has been linked to the IBI1 perception mechanism.

CAS3775-73-3
Molecular formulaC4H9NO2
Molecular weight103.12 g/mol

Product overview

Position matters as much as configuration for this small amino acid. In (R)-3-aminobutanoic acid, the amino group is attached to the β carbon rather than the α carbon, and that carbon has the R configuration. CAS 3775-73-3 therefore distinguishes it from α-aminobutyric acid and from the S enantiomer of BABA. The substance is identified as the amino acid without an added counterion. Besides its catalogue role as a chiral synthesis building block, the R form has a specific published plant-research context. Buyers should separate chemical assay, positional identity and enantiomeric composition when evaluating a grade; each answers a different question about the material and its suitability for the intended investigation.

Chemical identity

Chemical name
(R)-3-aminobutanoic acid
CAS number
3775-73-3
Molecular formula
C4H9NO2
Molecular weight
103.12 g/mol

Application context

R-BABA has been studied in plant immune priming, including perception involving the IBI1 aspartyl-tRNA synthetase. These experiments distinguish the R enantiomer, making enantiomeric composition central to comparable research materials. Its beta-amino-acid structure is also relevant to chiral building-block selection. Specify the C3 amino group, R configuration and amino-acid form, with separate requirements for chemical content and R/S composition.

Chemistry and synthetic role

The carboxyl group and β-amino group define a β-amino-acid scaffold. A single stereocentre at C3 distinguishes R-BABA from S-BABA; this stereochemical distinction does not describe the amino position, which must also be confirmed.

Quality review

Establish R/S composition

Request an appropriate chiral method when the experiment or synthesis depends on the R enantiomer.

Confirm the β-amino connectivity

Identity data should distinguish 3-aminobutanoic acid from positional amino-acid isomers.

Agree the assay basis

Specify the amino-acid form and how water or any added counterion is accounted for in quantitative results.

Preparing a specification

Specify (3R)-3-aminobutanoic acid, CAS 3775-73-3, without an added salt. State chemical assay, identity method and the required enantiomeric-composition evidence; agree the reporting basis for water and assay.

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 batch COA, SDS and identity data. Confirm availability of a chiral chromatogram and method suitable for the agreed R/S criterion, especially for comparative biological research.

Procurement questions

Is this an α-amino acid?

No. Its amino group is on C3, the β position relative to the carboxyl group.

Why specify the R enantiomer for plant research?

The cited study investigates an interaction and immune-priming response involving R-BABA; match the tested material to the experimental design.

Can unspecified BABA be substituted?

Only after confirming its enantiomeric composition against the experimental design or synthesis requirement.

Technical sources
  1. PubChem CID 5706670: properties and CAS synonymsNCBI / NLM / NIH
  2. (R)-3-Aminobutyric acid A3308Tokyo Chemical Industry
  3. Plant perception of β-aminobutyric acid is mediated by an aspartyl-tRNA synthetaseLuna et al.; Nature Chemical Biology / PMC