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100536

Sigma-Aldrich

4-Aminobenzoic acid

99%, for peptide synthesis, ReagentPlus®

Synonym(s):

PABA, Vitamin Bx, Vitamin H1

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50 G
$58.50
250 G
$94.00
1 KG
$244.00
5 KG
$490.00

About This Item

Linear Formula:
H2NC6H4CO2H
CAS Number:
150-13-0
Molecular Weight:
137.14
Beilstein:
471605
EC Number:
205-753-0
MDL number:
MFCD00007894
UNSPSC Code:
12352106
eCl@ss:
32160406
PubChem Substance ID:
22435039
NACRES:
NA.22

$58.50

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Product Name

4-Aminobenzoic acid, ReagentPlus®, 99%

Quality Level

200

product line

ReagentPlus®

Assay

99%

form

solid

reaction suitability

reaction type: solution phase peptide synthesis

mp

187-189 °C (lit.)

solubility

95% ethanol: soluble 5%, clear to slightly hazy, colorless to yellow

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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General description

4-Aminobenzoic acid (4-ABA) acts as an bacterial cofactor and participates in the synthesis of folic acid.[1] It is a versatile reagent for structure extension through linear hydrogen-bonding associations, involving both the carboxylic acid and amine functional groups.[1] Formation of 4-ABA monolayer film on glassy carbon electrode (GCE) by amino cation radical method has been described.[2] Molecular adducts of 4-ABA have been prepared and their characterization by infrared spectroscopy and X-ray diffration methods have been reported.[3]

Application

4-Aminobenzoic acid may be used in the following studies:
  • Covalent modification of glassy carbon electrode.[4]
  • Synthesis of 1,4-(2-chlorobenzylidene)aminobenzoic acid (Schiff base).[5]
  • Spectrophotometric determination of the trace amounts of dopamine, methyldopa and levodopa.[6]
  • Synthesis of 1:1 proton-transfer compound with 5-sulfosalicylic acid.[1]

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Hazard Statements

H412

Precautionary Statements

P273 - P501

Hazard Classifications

Aquatic Chronic 3

Storage Class Code

11 - Combustible Solids

WGK

WGK 2

Flash Point(F)

339.8 °F - closed cup

Flash Point(C)

171 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
WXBF1369V
WXBD9854V
WXBD9855V
WXBD8677V
WXBD6516V

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Gehad G Mohamed et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 62(4-5), 1140-1150 (2005-06-16)
Metal complexes of Schiff base derived from 2-thiophene carboxaldehyde and 2-aminobenzoic acid (HL) are reported and characterized based on elemental analyses, IR, 1H NMR, solid reflectance, magnetic moment, molar conductance and thermal analysis (TGA). The ligand dissociation as well as
Layer-by-layer assembly of multilayer films consisting of silicotungstate and a cationic redox polymer on 4-aminobenzoic acid modified glassy carbon electrode and their electrocatalytic effects.
Cheng L, et al.
Analytica Chimica Acta, 34(12), 1093-1100 (1999)
The 1: 1 proton-transfer compound of 5-sulfosalicylic acid with 4-aminobenzoic acid.
Smith G, et al.
Acta Crystallographica Section E, Structure Reports Online, 61(2), 313-316 (2005)
Spectrophotometric determination of catecholamines based on their oxidation reaction followed by coupling with 4-aminobenzoic acid.
Madrakian T, et al.
Journal of the Brazilian Chemical Society, 17(7), 1259-1265 (2006)
Covalent modification of a glassy carbon surface by 4-aminobenzoic acid and its application in fabrication of a polyoxometalates-consisting monolayer and multilayer films.
Liu J, et al.
Langmuir, 16(19), 7471-7476 (2000)
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Questions

  1. Hallo, wie lange ist die Haltbarkeit des Produkts? auf dem Gebinde und dem Zertifikat gibt es dazu keine Angaben.

    1 answer

    1. This product is not assigned an expiration date or recommended retest date. Customers should routinely inspect products with no expiration date or recommended retest date to ensure they perform as expected. These products are also subject to a one-year warranty from the date of shipment.

      For more information, you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services.

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