5H-[1,3]dioxolo[4,5-f]indole-7-carboxylic acid CAS 32471-21-9
| CAS No. | 32471-21-9 |
| Molecular Formula | C10H7NO4 |
| Molecular Weight | 205.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
5H-[1,3]dioxolo[4,5-f]indole-7-carboxylic acid (CAS 32471-21-9), molecular formula C10H7NO4 and molecular weight 205.17 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5H-[1,3]dioxolo[4,5-f]indole-7-carboxylic acid (C10H7NO4) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 205.17 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 5H-[1,3]dioxolo[4,5-f]indole-7-carboxylic acid 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 | C10H7NO4 |
| Molecular Weight | 205.17 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 1 |
Related H Standards
- 5H-[1,3]Dioxolo[4,5-f]indole-6-carboxylic Acid (CAS 106517-64-0)
- (5H-[1,3]Dioxolo[4,5-f]indol-7-yl)boronic acid (CAS 948593-79-1)
- [1,3]Dioxolo[4',5':4,5]benzo[1,2-d]oxazole-6-carboxylic acid (CAS 933742-39-3)
- 7-Methyl-[1,3]dioxolo[4',5':4,5]benzo[1,2-d]thiazol-6(7H)-imine (CAS 1286726-65-5)
- [1,3]Dioxolo[4,5-g]quinoline-7-carbaldehyde (CAS 363135-57-3)
- 3-([1,3]Dioxolo[4,5-b]pyridin-6-yl)propanoic acid (CAS 1260666-20-3)
- Ethyl [1,3]dioxolo[4,5-b]pyridine-6-carboxylate (CAS 76470-36-5)
- Ethyl [1,3]dioxolo[4,5-c]pyridine-6-carboxylate (CAS 76470-28-5)
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