Fluorescent Brightener 28 CAS 4193-55-9
| CAS No. | 4193-55-9 |
| Molecular Formula | C40H42N12O10S2 |
| 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 Fluorescent Brightener 28.
Fluorescent Brightener 28 (CAS 4193-55-9) is a high-purity analytical reference standard with the molecular formula C40H42N12O10S2Na and a molecular weight of 937.96 g/mol.
Fluorescent Brightener 28 (C40H42N12O10S2Na) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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), Fluorescent Brightener 28 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 | C40H42N12O10S2 2*Na |
| Molecular Weight | 937.96 g/mol |
| Purity | >95% |
| 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) | 26.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 12 |
| Sulfur Atoms | 2 |
Related Fluorescent Standards
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- Fluorescent Brightener 90 (CAS 120797-63-9)
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- Fluorescent Brightener 220 (CAS 16470-24-9)
Recommended Standards
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- Semaglutide (CAS 910463-68-2)
Why CATO?
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