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100536

Sigma-Aldrich

4-Aminobenzoic acid

99%, for peptide synthesis, ReagentPlus®

Sinonimo/i:

PABA, Vitamin Bx, Vitamin H1

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50 G
CHF 29.60
250 G
CHF 47.80
1 KG
CHF 143.00
5 KG
CHF 550.00

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Cambia visualizzazione
50 G
CHF 29.60
250 G
CHF 47.80
1 KG
CHF 143.00
5 KG
CHF 550.00

About This Item

Formula condensata:
H2NC6H4CO2H
Numero CAS:
150-13-0
Peso molecolare:
137.14
Beilstein:
471605
Numero CE:
205-753-0
Numero MDL:
MFCD00007894
Codice UNSPSC:
12352106
eCl@ss:
32160406
ID PubChem:
22435039
NACRES:
NA.22

CHF 29.60

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Nome del prodotto

4-Aminobenzoic acid, ReagentPlus®, 99%

Livello qualitativo

200

Nome Commerciale

ReagentPlus®

Saggio

99%

Stato

solid

Impiego in reazioni chimiche

reaction type: solution phase peptide synthesis

Punto di fusione

187-189 °C (lit.)

Solubilità

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

Densità

1.374 g/mL at 25 °C (lit.)

applicazioni

peptide synthesis

Stringa SMILE

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)
ALYNCZNDIQEVRV-UHFFFAOYSA-N

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Categorie correlate

Descrizione generale

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]

Applicazioni

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]

Note legali

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

Indicazioni di pericolo

H412

Consigli di prudenza

P273 - P501

Classi di pericolo

Aquatic Chronic 3

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 2

Punto d’infiammabilità (°F)

339.8 °F - closed cup

Punto d’infiammabilità (°C)

171 °C - closed cup

Dispositivi di protezione individuale

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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Certificati d'analisi (COA)

Lot/Batch Number
WXBF5576V
WXBF1369V
WXBD9854V
WXBD9855V
WXBD8677V

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Propyphenazone Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1389

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Methyl 4-aminobenzoate 98%

Sigma-Aldrich

274186

Methyl 4-aminobenzoate

Potassium chlorate anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99%

Sigma-Aldrich

799386

Potassium chlorate

Hypoxanthine ≥99.0%

Sigma-Aldrich

H9377

Hypoxanthine

Anthranilic acid reagent grade, ≥98%

Sigma-Aldrich

A89855

Anthranilic acid

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)
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)
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)
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)
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Questions

1–3 of 3 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  3. 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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