All Photos(2)

429767

Sigma-Aldrich

4-Aminobenzoic acid

purified by sublimation, ≥99%

Synonym(s):
Vitamin H1, Vitamin Bx, PABA
Linear Formula:
H2NC6H4CO2H
CAS Number:
Molecular Weight:
137.14
Beilstein:
471605
EC Number:
MDL number:
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

≥99%

purified by

sublimation

reaction suitability

reaction type: solution phase peptide synthesis

mp

187-189 °C (lit.)

density

1.374 g/mL at 25 °C (lit.)

application(s)

peptide synthesis

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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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

Certificate of Origin

Kirk E Hevener et al.
Journal of medicinal chemistry, 53(1), 166-177 (2009-11-11)
Dihydropteroate synthase (DHPS) is a key enzyme in bacterial folate synthesis and the target of the sulfonamide class of antibacterials. Resistance and toxicities associated with sulfonamides have led to a decrease in their clinical use. Compounds that bind to the
D Laufer et al.
Gastroenterology, 101(1), 207-213 (1991-07-01)
The bentiromide test was evaluated using plasma p-aminobenzoic acid as an indirect test of pancreatic insufficiency in young children between 2 months and 4 years of age. To determine the optimal test method, the following were examined: (a) the best
P R Durie et al.
The Journal of pediatrics, 121(3), 413-416 (1992-09-01)
We assessed the diagnostic capability of the bentiromide test using a high-pressure liquid-chromatography method to analyze p-aminobenzoic acid and its metabolites in plasma as an indirect measure of exocrine pancreatic function. Mean total amine concentration in pancreatic-insufficient subjects was significantly
Lei Zhou et al.
Water research, 47(1), 153-162 (2012-10-23)
Dissolved organic matter (DOM) is an important photosensitizer for the phototransformation of organic contaminants in sunlit natural waters. This article focuses on the photolysis kinetics and mechanism of sunscreen agent p-aminobenzoic acid (PABA) in the presence of four kinds of
Djeneb Camara et al.
The Journal of biological chemistry, 287(26), 22367-22376 (2012-05-12)
Glutamine amidotransferase/aminodeoxychorismate synthase (GAT-ADCS) is a bifunctional enzyme involved in the synthesis of p-aminobenzoate, a central component part of folate cofactors. GAT-ADCS is found in eukaryotic organisms autonomous for folate biosynthesis, such as plants or parasites of the phylum Apicomplexa.

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