Aristolochic Acid B CAS 475-80-9
| CAS No. | 475-80-9 |
| Molecular Formula | C16H9NO6 |
| Molecular Weight | 311.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Aristolochic Acid B is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Aristolochic Acid B (CAS 475-80-9), molecular formula C16H9NO6 and molecular weight 311.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Aristolochic Acid B is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 311.25 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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), Aristolochic Acid B 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 | C16H9NO6 |
| Molecular Weight | 311.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Related Aristolochic Standards
Recommended Standards
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- Belotecan HCl (CAS 213819-48-8)
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- 3-Iodo-1H-pyridin-2-one (CAS 111079-46-0)
- 3-(7-Fluoro-3-indolyl)propanoic Acid (CAS 1018656-73-9)
- 4-(Hexyloxy)benzoic acid (CAS 1142-39-8)
- 1-(5-Ethynylthiophen-2-yl)ethan-1-one (CAS 658701-97-4)
- 2-(((1-Acetylpiperidin-2-yl)methyl)(methyl)amino)acetic acid (CAS 1353985-00-8)
- Ethyl 5-((cyclohexylamino)methyl)-2,4-dimethyl-1H-pyrrole-3-carboxylate (CAS 859067-16-6)
- Semaglutide Impurity 7 (CAS CATO-C4X-22267)
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