Direct Blue 76 (Technical Grade) CAS 16143-79-6
| CAS No. | 16143-79-6 |
| Molecular Formula | C32H16N6O16S4 |
| 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 Direct Blue 76 (Technical Grade).
Direct Blue 76 (Technical Grade) (CAS 16143-79-6) is a high-purity analytical reference standard with the molecular formula C32H16N6O16S4CuNa and a molecular weight of 955.28 g/mol.
Based on its molecular formula C32H16N6O16S4CuNa, Direct Blue 76 (Technical Grade) 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 955.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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), Direct Blue 76 (Technical Grade) 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 | C32H16N6O16S4 2*Cu 4*Na |
| Molecular Weight | 955.28 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) | 28.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 4 |
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