2,3-DIOXOINDOLINE-5-CARBOXYLIC ACID CAS 25128-32-9
| CAS No. | 25128-32-9 |
| Molecular Formula | C9H5NO4 |
| Molecular Weight | 191.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 191.14 g/mol gives 2,3-DIOXOINDOLINE-5-CARBOXYLIC ACID distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2,3-DIOXOINDOLINE-5-CARBOXYLIC ACID (CAS 25128-32-9), a certified reference material (molecular formula C9H5NO4, MW 191.14 g/mol) for analytical method development and quality control.
Based on its molecular formula C9H5NO4, 2,3-DIOXOINDOLINE-5-CARBOXYLIC ACID contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 191.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 2,3-DIOXOINDOLINE-5-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 | C9H5NO4 |
| Molecular Weight | 191.14 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.) | 1964 |
| Nitrogen Atoms | 1 |
Related DIOXOINDOLINE Standards
- 2,3-Dioxoindoline-6-carboxylic acid (CAS 101870-10-4)
- 2,3-Dioxoindoline-4-carboxylic acid (CAS 41704-95-4)
- 2,3-Dioxoindoline-7-carboxylic acid (CAS 25128-35-2)
- 2,3-Dioxoindoline-5-carboxamide (CAS 28283-98-9)
- Methyl 2,3-dioxoindoline-5-carboxylate (CAS 101460-85-9)
- Methyl 2,3-dioxoindoline-7-carboxylate (CAS 103030-10-0)
- Methyl 2,3-dioxoindoline-4-carboxylate (CAS 153072-43-6)
- 1-Methyl-2,3-dioxoindoline-4-carboxylic acid (CAS 1644629-18-4)
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