Merck
All Photos(3)

A9878

Sigma-Aldrich

4-Aminobenzoic acid

ReagentPlus®, ≥99%

Synonym(s):
para-Aminobenzoic acid, PABA, Vitamin Bx, Vitamin H1
Linear Formula:
H2NC6H4CO2H
CAS Number:
Molecular Weight:
137.14
Beilstein:
471605
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

biological source

synthetic (organic)

Quality Level

product line

ReagentPlus®

assay

≥99%

form

powder

reaction suitability

reaction type: solution phase peptide synthesis

mp

187-189 °C (lit.)

solubility

ethanol: 50 mg/mL, clear, colorless to faintly yellow

density

1.374 g/mL at 25 °C (lit.)

application(s)

peptide synthesis

storage temp.

2-8°C

SMILES string

Nc1ccc(cc1)C(O)=O

InChI

1S/C7H7NO2/c8-6-3-1-5(2-4-6)7(9)10/h1-4H,8H2,(H,9,10)

InChI key

ALYNCZNDIQEVRV-UHFFFAOYSA-N

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Application

4-Aminobenzoic acid (4-ABA) can be used in the synthesis of:
  • Schiff bases based on 4-ABA with good antibacterial activity.
  • Co(II) and Mn(II) salts of 4-ABA supported on silica gel which in turn can be used as catalysts in oxidation of thiols to disulfides.
  • 4-amino-3-bromobenzoic acid.
  • Curing agent, N-(4-carboxyphenyl)trimellitimide (NCPT).

Packaging

5, 25, 100 g in glass bottle

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

339.8 °F

Flash Point(C)

171 °C

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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