| CAS No. | 61827-75-6 |
| Molecular Formula | C18H17N3O7S2 |
| Molecular Weight | 451.47 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1,5-Naphthalenedisulfonic acid, 3-[2-(4-amino-5-methoxy-2-methylphenyl)diazenyl]-.
1,5-Naphthalenedisulfonic acid, 3-[2-(4-amino-5-methoxy-2-methylphenyl)diazenyl]- (CAS 61827-75-6), molecular formula C18H17N3O7S2 and molecular weight 451.47 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,5-Naphthalenedisulfonic acid, 3-[2-(4-amino-5-methoxy-2-methylphenyl)diazenyl]- (C18H17N3O7S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 451.47 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
CATO manufactures 1,5-Naphthalenedisulfonic acid, 3-[2-(4-amino-5-methoxy-2-methylphenyl)diazenyl]- under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C18H17N3O7S2 |
| Molecular Weight | 451.47 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1974 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 2 |