1,3,3a1,4,6,7,9-Heptaazaphenalene-2,5,8-triol CAS 1502-46-1
| CAS No. | 1502-46-1 |
| Molecular Formula | C6H3N7O3 |
| Molecular Weight | 221.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1,3,3a1,4,6,7,9-Heptaazaphenalene-2,5,8-triol is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1,3,3a1,4,6,7,9-Heptaazaphenalene-2,5,8-triol (CAS 1502-46-1), molecular formula C6H3N7O3 and molecular weight 221.13 g/mol, is a CATO reference standard with documented purity and traceability.
1,3,3a1,4,6,7,9-Heptaazaphenalene-2,5,8-triol (C6H3N7O3) contains an amino-acid-derived structure, an amide 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. 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), 1,3,3a1,4,6,7,9-Heptaazaphenalene-2,5,8-triol 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 | C6H3N7O3 |
| Molecular Weight | 221.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 7 |
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