7-OXo-3,7-dihydropyrano[3,2-e]indole-2-carboxylic acid CAS 343595-31-3
| CAS No. | 343595-31-3 |
| Molecular Formula | C12H7NO4 |
| Molecular Weight | 229.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 7-OXo-3,7-dihydropyrano[3,2-e]indole-2-carboxylic acid 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.
7-OXo-3,7-dihydropyrano[3,2-e]indole-2-carboxylic acid (CAS 343595-31-3), molecular formula C12H7NO4 and molecular weight 229.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H7NO4, 7-OXo-3,7-dihydropyrano[3,2-e]indole-2-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 229.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
Physical & Chemical Properties
| Molecular Formula | C12H7NO4 |
| Molecular Weight | 229.19 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 1 |
Related OXo Standards
- 9-Methyl-4,9-dihydropyrano[3,4-b]indole-1,3-dione (CAS 60442-30-0)
- 4,9-dihydropyrano[3,4-b]indole-1,3-dione (CAS 60442-29-7)
- 6-methyl-2,3-dihydropyrano[2,3-b]pyridin-4-one (CAS 1256825-12-3)
- 2,3-dihydropyrano[2,3-b]pyridin-4-one (CAS 1196153-27-1)
- 2,3-dihydropyrano[2,3-c]pyridin-4-one (CAS 2091452-31-0)
- 2,3-dihydropyrano[3,2-b]pyridin-4-one (CAS 405174-48-3)
- 1,2-Dihydropyrano[2,3-c]pyrazole-3,6-dione (CAS 104615-92-1)
- 5,7-Dihydropyrano[3,4-c]pyrazol-4(1H)-one (CAS 1391732-41-4)
Recommended Standards
- 7-Hydroxy-3-oxo-3H-phenoxazine 10-oxide (CAS 550-82-3)
- 8-Aminobenzo[g]pteridine-2,4-diol (CAS 4713-68-2)
- 7-(Furan-2-yl)pyrazolo[1,5-a]pyrimidine-3-carboxylic acid (CAS 869947-18-2)
- Butanoic acid, 4-[(2,5-dioxo-1-pyrrolidinyl)oxy]-4-oxo-, methyl ester (CAS 52787-46-9)
- N-Hydroxy-4-(nonyloxy)benzimidamide (CAS 67224-31-1)
- 3-Cyclopropoxy-2-ethylisonicotinonitrile (CAS 1243395-51-8)
- 4-(3,4-Dihydro-2H-benzo[b][1,4]dioxepin-7-yl)-6-(trifluoromethyl)pyrimidin-2-amine (CAS 519056-64-5)
- (1R)-2,2-Dimethylcyclopropane-1-carboxylic acid (CAS 28624-52-4)
- Ethyl 3-nitro-2-naphthoate (CAS 77802-23-4)
- (S)-a-Amino-3,4-dimethoxybenzeneacetic acid (CAS 147383-98-0)
- Quinoline-5,8-dithiol (CAS 39103-20-3)
- Voclosporin (CAS 515814-01-4)
- 5-Hydroxy-2,3,4,9-tetrahydrocarbazole (CAS 35618-96-3)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com