Reactive Blue 2 CAS 12236-82-7
| CAS No. | 12236-82-7 |
| Molecular Formula | C29H20ClN7O11S3 |
| Molecular Weight | 774.16 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 Reactive Blue 2.
Reactive Blue 2 (CAS 12236-82-7) is a high-purity analytical reference standard with the molecular formula C29H20ClN7O11S3 and a molecular weight of 774.16 g/mol.
Structurally, Reactive Blue 2 (C29H20ClN7O11S3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 23.0, corresponding to approximately 23 ring(s) or double-bond equivalent(s). With a molecular weight of 774.16 g/mol, it falls into the high-molecular-weight range. 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.
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 | C29H20ClN7O11S3 |
| Molecular Weight | 774.16 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) | 23.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 3 |
Related Reactive Standards
- Reactive Blue 5 (CAS 16823-51-1)
- C-Reactive Protein (CRP) (201-206) H-Lys-Pro-Gln-Leu-Trp-Pro-OH (CAS 130348-99-1)
- Reactive Red 11 (CAS 12226-08-3)
- Reactive blue 4 (CAS 13324-20-4)
- Reactive Orange 14 (CAS 12225-86-4)
- Reactive Yellow 3 (CAS 6539-67-9)
- C-Reactive Protein (CRP) (174-185) (CAS 147516-85-6)
- Reactive Blue 21 (CAS 12236-86-1)
Recommended Standards
- {1-[(4R)-2-(1-Adamantyl-4,5-dihydrooxazolyl)ethyl]-3-(2,6-di-i-propylphenyl)imidazolin-2-ylidene}(1,5-cyclooctadiene)iridium(I) (CAS 934621-82-6)
- 1-Iodo-1H,1H,2H,2H-perfluorotetradecane (CAS 30046-31-2)
- Zinc, [5,10,15,20-tetrakis(4-ethynylphenyl)-21H,23H-porphinato(2-)-κN21,κN22,κN23,κN24]-, (SP-4-1)- (CAS 502613-00-5)
- 1,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13-Heptacosafluoro-15-iodopentadecane (CAS 146983-96-2)
- (R)-6-methoxy-1,2,3,4-tetrahydronaphthalene-2-carboxylic acid (CAS 136759-35-8)
- 4-(3,4-Dichlorobenzoyl)quinoline (CAS 1706462-39-6)
- 3-Bromo-2-(trifluoromethyl)pyridine-4-acetic acid (CAS 1227595-64-3)
- 5-Chloro-2-hydroxy-4-(trifluoromethyl)benzoic acid (CAS 2386287-27-8)
- 8-Aminoquinoline-7-carbonitrile (CAS 98012-85-2)
- 2-(3-Chloro-2-methylphenyl)-1,3-dioxoisoindoline-5-carboxylic acid (CAS 356576-29-9)
- 3-(1-Pyridin-4-yl-3,4-dihydroisoquinolin-2(1H)-yl)propanoic acid (CAS 610258-80-5)
- 5-Chloro-2-(1h-pyrazol-1-yl)benzaldehyde (CAS 1214622-54-4)
- 3-Chloro-N-(2,4-dimethylphenyl)benzamide (CAS 196700-86-4)
- Tirzepatide Impurity 43 (CAS CATO-C4X-324043)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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