Reactive Blue 21 CAS 12236-86-1
| CAS No. | 12236-86-1 |
| Molecular Formula | C40H25N9O14S5 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C40H25N9O14S5Cu, Reactive Blue 21 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 1079.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Reactive Blue 21 (CAS 12236-86-1), a certified reference material (molecular formula C40H25N9O14S5Cu, MW 1079.54 g/mol) for analytical method development and quality control.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), Reactive Blue 21 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 | C40H25N9O14S5 Cu |
| Molecular Weight | 1079.54 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) | 33.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1960 |
| Nitrogen Atoms | 9 |
| Sulfur Atoms | 5 |
Related Reactive Standards
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Recommended Standards
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- 4-(5-([1,1'-Biphenyl]-4-yl)oxazol-2-yl)-N,N-dimethylaniline (CAS 54638-78-7)
- 3-[4-(Methylthio)phenyl]-1H-pyrazole (CAS 474706-34-8)
- 3-(4-Fluorophenyl)-5-(trifluoromethyl)picolinic acid (CAS 1214364-30-3)
- 2-(4-Amino-1H-pyrazol-1-yl)-1-morpholinoethanone (CAS 1152914-16-3)
- 6-Nitropyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 80772-97-0)
- 3-Methanesulfonylpiperidine (CAS 290328-56-2)
- Pimavanserin Impurity 39 (CAS CATO-C4X-193839)
- Itraconazole-d5 (CAS 1217524-77-0)
- Cholecystokinin Octapeptide free acid (desulfated) (H-2075.0001) (CAS 103974-46-5)
Why CATO?
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