ACID YELLOW 40 CAS 6372-96-9
| CAS No. | 6372-96-9 |
| Molecular Formula | C23H18ClN4O7S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of ACID YELLOW 40 is closely related to a salt form, a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
ACID YELLOW 40 (CAS 6372-96-9), molecular formula C23H18ClN4O7S2Na and molecular weight 584.98 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C23H18ClN4O7S2Na, ACID YELLOW 40 contains a salt form, a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 584.98 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), ACID YELLOW 40 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C23H18ClN4O7S2 Na |
| Molecular Weight | 584.98 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related ACID Standards
Recommended Standards
- NAN-190 hydrobromide, 98% (CAS 115338-32-4)
- 1-(2,2-Dibromovinyl)-2-fluorobenzene (CAS 401514-42-9)
- n-(1-((2,5-Dichlorophenyl)amino)-2-oxo-2-(p-tolyl)ethyl)furan-2-carboxamide (CAS 425631-08-9)
- (2-Phenylinden-3-yl)dicyclohexylphosphonium BF4 (CAS 1231767-67-1)
- Naproxen Impurity N1 (CAS 27602-75-1)
- 2-(Isopropylthio)aniline (CAS 6397-33-7)
- N-(4-(2-(1-Benzyl-2,5-dimethyl-1H-pyrrol-3-yl)-2-oxoethoxy)phenyl)furan-2-carboxamide (CAS 852846-00-5)
- tert-Butyl 2-(2-chloro-5-fluoropyridin-4-yl)acetate (CAS 2755892-97-6)
- 2-Fluoro-1-phenylethanone (CAS 450-95-3)
- Semaglutide impurity 45 (CAS CATO-C4X-222645)
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