NP9O8E29QW
4431-00-9
Aurintricarboxylic acid
Benzoic acid, 5-((3-carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methyl)-2-hydroxy-
5,5'-(3-Carboxy-4-oxocyclohexa-2,5-dienylidenemethylene)di(salicylic acid)
1,4-Cyclohexadiene-1-carboxylic acid, 3-(bis(3-carboxy-4-hydroxyphenyl)methylene)-6-oxo-
Benzoic acid, 3,3'-((3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methylene)bis(6-hydroxy-
4-10-00-04161 (Beilstein Handbook Reference)
Aluminon free acid
BRN 2228904
EINECS 224-628-1
NSC 4056
UNII-NP9O8E29QW CAS 4431-00-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4431-00-9 |
| Molecular Formula | C22H26O9 |
| Molecular Weight | 434.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Description
CATO supplies NP9O8E29QW
4431-00-9
Aurintricarboxylic acid
Benzoic acid, 5-((3-carboxy-4-hydroxyphenyl)(3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methyl)-2-hydroxy-
5,5'-(3-Carboxy-4-oxocyclohexa-2,5-dienylidenemethylene)di(salicylic acid)
1,4-Cyclohexadiene-1-carboxylic acid, 3-(bis(3-carboxy-4-hydroxyphenyl)methylene)-6-oxo-
Benzoic acid, 3,3'-((3-carboxy-4-oxo-2,5-cyclohexadien-1-ylidene)methylene)bis(6-hydroxy-
4-10-00-04161 (Beilstein Handbook Reference)
Aluminon free acid
BRN 2228904
EINECS 224-628-1
NSC 4056
UNII-NP9O8E29QW (CAS 4431-00-9), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C22H26O9. Molecular weight: 434.44 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C22H26O9 |
| Molecular Weight | 434.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
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 13829788188 / jacky.chen@cato-chem.com