Acid Green 3 CAS 4680-78-8
| CAS No. | 4680-78-8 |
| Molecular Formula | C37H35N2O6S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Acid Green 3 (CAS 4680-78-8), molecular formula C37H35N2O6S2Na and molecular weight 690.80 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Acid Green 3 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 690.80 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C37H35N2O6S2 Na |
| Molecular Weight | 690.80 g/mol |
| Purity | Technical Grade |
| 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 |
| Degree of Unsaturation (DBE) | 21.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Acid Standards
Recommended Standards
- (S)-5-((2-(4-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-5-(tert-butoxy)-5-oxopentanamido)ethyl)amino)naphthalene-1-sulfonic acid (CAS 194039-49-1)
- tert-Butyl 3-(ethoxycarbonyl)-1H-indol-2-ylcarbamate (CAS 1160995-04-9)
- (4-Butoxy-2-methylphenyl)methanol (CAS 1443341-97-6)
- (4-(5-(4-Isobutylphenyl)-1,2,4-oxadiazol-3-yl)phenyl)methanol (CAS 635702-24-8)
- 4-Bromo-N-(3-fluoro-2-methylphenyl)benzenesulfonamide (CAS 1284698-48-1)
- Vazegepant Impurity 5 (CAS CATO-C4X-32005)
- 5-Bromo-2-(methylamino)benzamide (CAS 22721-18-2)
- 3-[(3-Chloro-4-Ethoxyphenyl)Methyl]-5-Fluoro-1H-Pyrimidine-2,4-Dione (CAS 102613-21-8)
- Tretinoin lmpurity 20 (CAS 173449-96-2)
- D-Glu3-Tirzepatide (CAS CATO-CPTD788927)
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