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

Shu-Ting Chen et al.
Journal of the American Society for Mass Spectrometry, 23(8), 1408-1418 (2012-06-08)
A strategy based on negative ion electrospray ionization tandem mass spectrometry and closed-ring labeling with both 8-aminopyrene-1,3,6-trisulfonate (APTS) and p-aminobenzoic acid ethyl ester (ABEE) was developed for linkage and branch determination of high-mannose oligosaccharides. X-type cross-ring fragment ions obtained from
L O Derewlany et al.
The Journal of pharmacology and experimental therapeutics, 269(2), 756-760 (1994-05-01)
The fetus is exposed to almost all of the substances found in the maternal circulation whether nutrients or foreign chemicals ("xenobiotics"). The main route of exposure is the placenta. The placenta is metabolically active toward xenobiotics and the nature of
Yoshihiko Tashiro et al.
Blood, 119(26), 6382-6393 (2012-05-11)
Plasminogen activator inhibitor-1 (PAI-1), an endogenous inhibitor of a major fibrinolytic factor, tissue-type plasminogen activator, can both promote and inhibit angiogenesis. However, the physiologic role and the precise mechanisms underlying the angiogenic effects of PAI-1 remain unclear. In the present
Reza Forghani et al.
Radiology, 263(2), 451-460 (2012-03-23)
To evaluate myeloperoxidase (MPO) as a newer therapeutic target and bis-5-hydroxytryptamide-diethylenetriaminepentaacetate-gadolinium (Gd) (MPO-Gd) as an imaging biomarker for demyelinating diseases such as multiple sclerosis (MS) by using experimental autoimmune encephalomyelitis (EAE), a murine model of MS. Animal experiments were approved
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

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