1,4-Phenylene bis(4-aminobenzoate) CAS 22095-98-3
| CAS No. | 22095-98-3 |
| Molecular Formula | C20H16N2O4 |
| Molecular Weight | 348.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 1,4-Phenylene bis(4-aminobenzoate) under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
1,4-Phenylene bis(4-aminobenzoate) (CAS 22095-98-3), molecular formula C20H16N2O4 and molecular weight 348.35 g/mol, is a CATO reference standard with documented purity and traceability.
1,4-Phenylene bis(4-aminobenzoate) (C20H16N2O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H16N2O4 |
| Molecular Weight | 348.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 2 |
Related Phenylene Standards
- 1,1-(1,4-Phenylene)diadamantane (CAS 10509-15-6)
- 1,1'-(1,4-Phenylene)bis(N-(4-methoxyphenyl)methanimine) (CAS 3525-51-7)
- 2,2'-(2-Methyl-1,3-phenylene)bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolane) (CAS 849402-14-8)
- 1,1'-(1,4-Phenylene)bis(N-(4-chlorophenyl)methanimine) (CAS 904-70-1)
- 1,1'-(1,4-Phenylene)bis(4,4,4-trifluorobutane-1,3-dione) (CAS 111200-13-6)
- 2,2'-(1,4-Phenylene)bis(benzo[d]oxazol-5-amine) (CAS 13752-53-9)
- 2,2'-(1,4-Phenylene)bis(benzo[d]oxazol-6-amine) (CAS 94533-96-7)
- 1,2-Phenylene bis(morpholine-4-carboxylate) (CAS 510734-16-4)
Recommended Standards
- 1,3-Dioxoisoindolin-2-yl 2-((tert-butoxycarbonyl)amino)-2-methylpropanoate (CAS 2240185-68-4)
- 1-{2-[5-methyl-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidin-2-yl]thiophen-3-yl}-1H-pyrrole (CAS 439109-43-0)
- 1-(2,4-Dihydroxy-5-methoxyphenyl)-2-(4-hydroxyphenyl)-3,3-dimethoxypropan-1-one (CAS 58115-20-1)
- 1-Amino-4,8-dihydroxy-5-(phenylamino)anthracene-9,10(4aH,9aH)-dione (CAS 883833-62-3)
- 2-Bromo-N-[4-(heptyloxy)phenyl]acetamide (CAS 1138445-90-5)
- N-((1H-Pyrrol-2-yl)methylene)-2,2-dimethoxyethanamine (CAS 158945-67-6)
- 4-[2-(4-chloro-1H-pyrazol-1-yl)ethoxy]-3-fluoroaniline,HCL (CAS 1431966-62-9)
- 1-(1-(tert-Butoxycarbonyl)piperidin-4-yl)cyclopentane-1-carboxylic acid (CAS 512822-51-4)
- 4-Bromo-3-(chloromethyl)pyridine (CAS 1060808-80-1)
- Ethyl 3-(methylthio)butanoate (CAS 233665-96-8)
- 6-((4-Methylbenzyl)oxy)-1H-purin-2-amine (CAS 129409-65-0)
- 2-Chloro-5-(difluoromethyl)-3-fluoropyridin-4-ol (CAS 1806921-46-9)
- 5-Chloro-2-(trifluoromethyl)pyrido[3,4-b]pyrazine (CAS 877402-72-7)
- Des-Lys16-Tirzepatide (CAS CATO-CPTD788957)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com