Alizarin Blue Black B CAS 1324-21-6
| CAS No. | 1324-21-6 |
| Molecular Formula | C26H16N2O9S2 |
| Molecular Weight | N/A |
| 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 Alizarin Blue Black B.
CATO supplies Alizarin Blue Black B (CAS 1324-21-6), a certified reference material (molecular formula C26H16N2O9S2Na, MW 587.53 g/mol) for analytical method development and quality control.
Alizarin Blue Black B (C26H16N2O9S2Na) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Alizarin Blue Black B 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 | C26H16N2O9S2 2*Na |
| Molecular Weight | 587.53 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Alizarin Standards
- Alizarin complexone (CAS #N/A)
- Acid Alizarin Blue BB (CAS 10114-40-6)
- Alizarin Red S (CAS 130-22-3)
- Alizarin Yellow R, Sodium Salt (CAS 1718-34-9)
- Acid Alizarin Red B (CAS 1836-22-2)
- Acid Alizarin Violet N (CAS 2092-55-9)
- Alizarin complex indicator (CAS 3952-78-1)
- ALizarin complexone dihydrate (CAS 455303-00-1)
Recommended Standards
- Tert-butyl 3-hydroxy-2-methylpropanoate (CAS 289040-80-8)
- (7aR)-3-(Trichloromethyl)tetrahydropyrrolo[1,2-c]oxazol-1(3H)-one (CAS 1263774-42-0)
- 5-Phenylimidazo[1,5-a]pyrazin-8(7H)-one (CAS 849199-59-3)
- N,N-Dimethyl-4-(pyrimidin-2-yl)piperazine-1-sulfonamide (CAS 99191-22-7)
- 2-(2-Methyl-1H-pyrrolo[2,3-b]pyridin-3-yl)acetonitrile (CAS 4414-86-2)
- Glyphosine (CAS 2439-99-8)
- 2-(4-Nitrophenyl)-5-(trifluoromethyl)-1,2-dihydro-3h-pyrazol-3-one (CAS 692281-44-0)
- 3-(4-Fluorophenyl)-6-(trifluoromethyl)pyridin-2-ol (CAS 1214337-35-5)
- N-Methyl-2-(piperidin-3-yloxy)butanamide (CAS 1706448-44-3)
- Insulin Degludec Impurity 24 (CAS CATO-C4X-215724)
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