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
| CAS No. | 4431-00-9 |
| Molecular Formula | C22H26O9 |
| Molecular Weight | 434.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 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.
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 certified reference material (molecular formula C22H26O9, MW 434.44 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, a hydroxyl group, an ether linkage, 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 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 434.44 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 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 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.
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 |
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Why CATO?
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