CAS: 99-05-8
SKU: S1687
m-Aminobenzoic acid | SKU: S1687
Synonyms: 3-Aminobenzoic acid; m-Carboxyaniline; MABA
m-Aminobenzoic acid (CAS 99-05-8), also known as 3-aminobenzoic acid, is an aromatic amino acid carrying both a primary amine and a carboxylic acid on the same ring, giving two independent reactive sites. Sarchem Labs supplies it as a white-yellow crystalline powder, each lot backed by a COA and SDS. Its meta-substitution pattern gives it distinct reactivity from PABA (the para isomer). Widely used as an intermediate in dye, pharmaceutical, and agrochemical synthesis.

Specifications

Melting Point174°C (existing Sarchem spec; lit. range 173–180°C)
ColorWhite-Yellow
Formula Weight137.14 g/mol
Physical FormCrystal-Powder at 20°C
Chemical Name or Material3-Aminobenzoic Acid
Molecular FormulaC7H7NO2
SMILES StringNc1cccc(c1)C(O)=O
CAS Number99-05-8
EC Number202-724-4
NACRESNA.22
MDL NumberMFCD00007795
PubChem CID7419
InChIKeyXFDUHJPVQKIXHO-UHFFFAOYSA-N
Beilstein Registry Number0471603
UNIIG2X3B3O37U

Applications

Dye/pigment synthesis (diazotization substrate for azo dyes)
Pharmaceutical intermediates (iodinated X-ray contrast media precursors)
Agrochemical manufacturing intermediate
Bifunctional reagent for amidation/esterification/cyclization chemistry
HPLC method-development reference compound

Product Description

What is m-Aminobenzoic Acid?

m-Aminobenzoic acid is a white-yellow crystalline compound whose benzene ring carries an amino and a carboxylic-acid group in a meta relationship, distinct from anthranilic acid (ortho) and PABA (para). This gives it two independently reactive functional groups rather than a single-purpose reagent profile.

Uses of m-Aminobenzoic Acid

Its amine diazotizes cleanly for azo dye/pigment production, while the combined amine/acid supports amidation and esterification routes in pharmaceutical and agrochemical synthesis, including X-ray contrast agent precursors. Also used as a chromatographic reference compound.

Safety Information

  • Signal Word: Warning | GHS Pictogram: GHS07
  • Hazard Statements: H302, H315, H319, H335
  • Storage Class: 11 | WGK: 2
  • PPE: Safety goggles, nitrile gloves, N95 respirator for dust

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FAQs: m-Aminobenzoic acid

Chemical intermediate for azo dyes, agrochemicals, and pharmaceutical compounds including X-ray contrast media precursors.

99-05-8 — identifies the meta isomer specifically (SKU S1687).

No — PABA (CAS 150-13-0) is the para isomer with different reactivity; not interchangeable.

C7H7NO2, MW 137.14 g/mol.

GHS Warning — harmful if swallowed, skin/eye/respiratory irritant; goggles, gloves, respirator recommended.