Acid Red 26 CAS 3761-53-3
| CAS No. | 3761-53-3 |
| Molecular Formula | C18H14N2O7S2 |
| 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 Acid Red 26.
CATO supplies Acid Red 26 (CAS 3761-53-3), a certified reference material (molecular formula C18H14N2O7S2Na, MW 457.43 g/mol) for analytical method development and quality control.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Acid Red 26 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 457.43 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), Acid Red 26 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 | C18H14N2O7S2 2*Na |
| Molecular Weight | 457.43 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Recommended Standards
- 2,4-Dinitrophenylhydrazine-d3 (CAS 259824-49-2)
- 2-[(4-Chloro-2,1,3-benzothiadiazol-5-yl)oxy]acetic Acid (CAS 29308-14-3)
- 2-Methoxy-1,3,4-thiadiazole hydrochloride (CAS 1332529-61-9)
- 5-Fluoro-3-methyl-1H-pyrrolo[3,2-b]pyridine (CAS 1068976-55-5)
- Methyl 4-(azepan-4-ylamino)-6-((5-cyanopyrazin-2-yl)amino)nicotinate (CAS 1137476-98-2)
- 6-(phenylamino)pyrimidine-4-carboxylic acid (CAS 1208980-40-8)
- 2-(4-Bromo-2-chlorophenyl)-2,2-difluoroacetic acid (CAS 1823816-46-1)
- bis(4-(dimethylamino)phenyl)(phenyl)phosphine oxide (CAS 803-20-3)
- N-(3,5-Dichlorophenyl)-2,4-diphenylpyrimidine-5-carboxamide (CAS 321433-23-2)
- Liraglutide Impurity 19 TFA Salt (CAS CATO-C4X-199219)
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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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com