All Photos(3)

A9878

Sigma-Aldrich

4-Aminobenzoic acid

ReagentPlus®, ≥99%

Synonym(s):
Vitamin H1, Vitamin Bx, para-Aminobenzoic acid, PABA
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

application(s)

peptide synthesis: suitable

mp

187-189 °C (lit.)

solubility

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

density

1.374 g/mL at 25 °C (lit.)

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 Germany

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

Certificate of Origin

Oxidation of thiols to disulfides by oxygen in presence of cobalt (II) and manganese (II) salts of 4-aminobenzoic acid supported on silica gel.
Hashemi MM and Karimi JZ
Monatshefte fur Chemie / Chemical Monthly, 135(1), 41-43 (2004)
Synthesis and antibacterial activity of some Schiff bases derived from 4-aminobenzoic acid.
Parekh J, et al.
J. Serb. Chem. Soc., 70(10), 1155-1155 (2005)
Rosin-derived imide-diacids as epoxy curing agents for enhanced performance.
Liu X, et al
Bioresource Technology, 101(7), 2520-2524 (2010)
Regioselective, photochemical bromination of aromatic compounds using N-bromosuccinimide.
Chhattise PK, et al.
Tetrahedron Letters, 49(1), 189-194 (2008)
Robert B Campenot et al.
Nature protocols, 4(12), 1869-1887 (2009-12-17)
The compartmented culture, in which primary neurons plated in a proximal compartment send their axons under silicone grease barriers and into left and right distal compartments, has enhanced the experimental capabilities of neuronal cultures. Treatments can be applied separately to...

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