B-PABA

Product Name: B-PABA
CAS No.: 6929-40-4
Chemical Name: B-PABA
Synonyms: B-PABA;Biot-pab;Biotin-PABA;N-(+)-Biotinyl-4-AMinobnzoic Acid;N-(+)-BIOTINYL-4-AMINOBENZOIC ACID;4-[5-(2-oxohexahydrothieno[3,4-d]imidazol-6-yl)pentanoylamino]benzoic acid;4-(5-((4S)-2-oxohexahydro-1H-thieno[3,4-d]iMidazol-4-yl)pentanaMido)benzoic acid;4-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)benzoic acid;Benzoic acid, 4-((5-(hexahydro-2-oxo-1H-thieno(3,4-D)imidazol-4-yl)-1-oxopentyl)amino)-, ion(1-)-;Benzoic acid, 4-[[5-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]-
CBNumber: CB4371083
Molecular Formula: C17H21N3O4S
Formula Weight: 363.43
MOL File: 6929-40-4.mol

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B-PABA Property

Melting point:: 295-297 °C
Boiling point:: 750.5±55.0 °C(Predicted)
Density: 1.338±0.06 g/cm3(Predicted)
storage temp.: 2-8°C
pka: 4.32±0.10(Predicted)
form: powder
color: white to light yellow
optical activity: [α]20/D +55±3°, c = 0.5% in 0.1 M NaOH
BRN: 50100
InChIKey: PVMDAMXGKHIMSQ-YDHLFZDLSA-N
SMILES: C(O)(=O)C1=CC=C(NC(=O)CCCC[C@H]2[C@@]3([H])NC(=O)N[C@@]3([H])CS2)C=C1

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Safety

Safety Statements: 22-24/25
WGK Germany: 3
F: 10

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Hazard and Precautionary Statements (GHS)

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 14408
Product name: N-(+)-Biotinyl-4-aminobenzoic acid
Purity: ≥98.0% (HPLC)
Packaging: 50mg
Price: $477
Updated: 2025/07/31

Sigma-Aldrich

Product number: 14408
Product name: N-(+)-Biotinyl-4-aminobenzoic acid
Purity: ≥98.0% (HPLC)
Packaging: 10mg
Price: $122
Updated: 2023/06/20

Iris Biotech GmbH

Product number: LS-4200
Product name: Biotin-PABA
Packaging: 250mg
Price: $540
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CCH0004073
Product name: N-(+)-BIOTINYL-4-AMINOBENZOIC ACID
Purity: 95.00%
Packaging: 10MG
Price: $626.15
Updated: 2021/12/16

American Custom Chemicals Corporation

Product number: CCH0004073
Product name: N-(+)-BIOTINYL-4-AMINOBENZOIC ACID
Purity: 95.00%
Packaging: 50MG
Price: $822.85
Updated: 2021/12/16

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B-PABA Chemical Properties,Usage,Production

Biological Activity

Biotinyl-4-aminobenzoic acid (B-PABA) is used as a substrate in biotinidase assays.

Purification Methods

Dissolve the acid in NaHCO3 solution, cool and precipitate it by adding N HCl. Collect the solid, dry it at 100o and recrystallise it from MeOH. Note that it is hydrolysed by aqueous 3M, 1M and 0.2M HCl at 120o

B-PABA Preparation Products And Raw materials

Raw materials

Preparation Products

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B-PABA Suppliers

China 19 Switzerland 1 United Kingdom 1 United States 4 Global 25

Suzhou Highfine Biotech Co., Ltd

Tel: 0512-69209928 18796809688
Email: zhouyingxiang@highfine.com
Country: China
ProdList: 1356
Advantage: 58

Syntechem Co.,Ltd

Tel
Fax: E-Mail Inquiry
Email: info@syntechem.com
Country: China
ProdList: 12984
Advantage: 57

Tianjin heowns Biochemical Technology Co., Ltd.

Tel: 400 638 7771
Email: sales@heowns.com
Country: China
ProdList: 14435
Advantage: 57

Hangzhou Sage Chemical Co., Ltd.

Tel: +86057186818502 13588463833
Fax: Pls mail us for more information!
Email: info@sagechem.com
Country: China
ProdList: 10266
Advantage: 58

SynAsst Chemical.

Tel: 021-60343070
Fax: 021-35122006
Country: China
ProdList: 12740
Advantage: 55

ShangHai Siyan Biological Technology Co., Ltd.

Tel: 021-50908862，442785678，326799392 18721037013
Fax: 021-50908862
Email: siyansales@126.com
Country: China
ProdList: 9627
Advantage: 58

Shanghai YuanYe Biotechnology Co., Ltd.

Tel: 021-61312847; 18021002903
Fax: QQ:3008007432
Email: 3008007409@qq.com
Country: China
ProdList: 71826
Advantage: 60

Tianjin heowns Biochemical Technology Co., Ltd.

Tel: 400-6387771-6039 18920764717
Email: sales@heowns.com
Country: China
ProdList: 23771
Advantage: 60

Shanghai Jiegu Biotechnology Co., Ltd.

Tel: 021-51698675
Email: sales@jiejiegroup.com
Country: China
ProdList: 8020
Advantage: 58

Shanghai Minhan Pharmaceutical Technology Co., Ltd.

Tel: 17612188245
Fax: QQ 2816925681
Email: 2816925681@qq.com
Country: China
ProdList: 2989
Advantage: 58

6929-40-4, B-PABARelated Search:

4-acetamidobenzoic acid 4-Aminobenzoic acid CHEMBRDG-BB 9071392 CHEMBRDG-BB 9071855 2-METHYLTETRAHYDROTHIOPHENE 4-(BUTYLAMINO)BENZOIC ACID BIOTIN 4-AMIDOBENZOIC ACID SODIUM SALT 4-Acetamidobenzaldehyde 4-(propionylamino)benzoic acid B-PABA

B-PABA

N-(+)-BIOTINYL-4-AMINOBENZOIC ACID

Benzoic acid, 4-((5-(hexahydro-2-oxo-1H-thieno(3,4-D)imidazol-4-yl)-1-oxopentyl)amino)-, ion(1-)-

Biot-pab

N-(+)-Biotinyl-4-AMinobnzoic Acid

4-(5-((4S)-2-oxohexahydro-1H-thieno[3,4-d]iMidazol-4-yl)pentanaMido)benzoic acid

Benzoic acid, 4-[[5-[(3aS,4S,6aR)-hexahydro-2-oxo-1H-thieno[3,4-d]imidazol-4-yl]-1-oxopentyl]amino]-

4-[5-(2-oxohexahydrothieno[3,4-d]imidazol-6-yl)pentanoylamino]benzoic acid

4-(5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamido)benzoic acid

Biotin-PABA

6929-40-4

BioChemical

Biochemicals and Reagents

Biotinidase

Substrates by Enzyme

Enzyme Substrates

Enzymes, Inhibitors, and Substrates