Pigment Blue 63 (Food Blue 1:1) CAS 16521-38-3
| CAS No. | 16521-38-3 |
| Molecular Formula | C16H10N2O8S2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Pigment Blue 63 (Food Blue 1:1) is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 449.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Pigment Blue 63 (Food Blue 1:1) (CAS 16521-38-3) is a high-purity analytical reference standard with the molecular formula C16H10N2O8S2Al and a molecular weight of 449.36 g/mol.
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 | C16H10N2O8S2 Al |
| Molecular Weight | 449.36 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 |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Pigment Standards
Recommended Standards
- (S)-2-Amino-3-(5-methoxy-1H-indol-3-yl)propanoic acid (CAS 25197-96-0)
- 4-Amino-1-(tert-butoxycarbonyl)pyrrolidine-2-carboxylic acid (CAS 125629-83-6)
- 2-chloro-5,7-dihydropyrrolo[3,2-d]pyrimidin-6-one (CAS 1536927-56-6)
- N-(2-((6-(Ethylamino)-2-methylpyrimidin-4-yl)amino)ethyl)butane-1-sulfonamide (CAS 1207031-49-9)
- 4-Amino-1,2-dimethyl-5-((phenylamino)methyl)pyrimidin-1-ium perchlorate (CAS 74017-68-8)
- 3-[4-(6-aminohexyl)-1-oxo-isoindolin-2-yl]piperidine-2,6-dione (CAS 2093386-32-2)
- 2-mercapto-5-methyl-3,6-diphenylthieno[2,3-d]pyrimidin-4(3H)-one (CAS 852296-88-9)
- 1-(4-Fluoro-3-isopropoxyphenyl)ethanone (CAS 1394962-80-1)
- 2-{1-[(tert-Butoxy)carbonyl]azetidin-3-yl}-2-hydroxyacetic acid (CAS 1067239-25-1)
- Semaglutide Impurity 130 (CAS 1188328-40-6)
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