1-Methyl-5H-pyrido[4,3-b]indole-3-carboxylic acid CAS 65032-81-7
| CAS No. | 65032-81-7 |
| Molecular Formula | C13H10N2O2 |
| Molecular Weight | 226.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Methyl-5H-pyrido[4,3-b]indole-3-carboxylic acid is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-Methyl-5H-pyrido[4,3-b]indole-3-carboxylic acid (CAS 65032-81-7), molecular formula C13H10N2O2 and molecular weight 226.23 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-Methyl-5H-pyrido[4,3-b]indole-3-carboxylic acid (C13H10N2O2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 226.23 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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-Methyl-5H-pyrido[4,3-b]indole-3-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 | C13H10N2O2 |
| Molecular Weight | 226.23 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 DMSO, DMF, methanol |
| 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.) | 1975 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 1-Hydroxy-1-phenyl-1H-pyrrolo[3,4-c]pyridin-3(2H)-one (CAS 849322-40-3)
- 1-Methyl-9H-pyrido[3,4-b]indole-3-carboxylic acid (CAS 22329-38-0)
- 1-Ethyl-5-nitro-3-propyl-1H-pyrazole-4-carboxamide (CAS 476687-43-1)
- 2-((Dimethylamino)methyl)-6-methoxy-4-nitrophenol (CAS 2977-69-7)
- 4-Amino-2-methyl-5-nitrobenzoic acid (CAS 408507-93-7)
- 1-(4-Chlorophenyl)-3-methyl-n-(3-methyl-1-phenyl-1h-pyrazol-5-yl)-1h-thieno[2,3-c]pyrazole-5-carboxamide (CAS 380238-17-5)
- 1-(4-Methoxyphenyl)-3-oxocyclobutanecarboxylic Acid (CAS 1340349-50-9)
- 5-Bromo-n-ethyl-2-(2-methoxy-ethoxy)-benzamide (CAS 904877-40-3)
- (2-{5-[(2,4-Dimethylphenoxy)methyl]-1,2,4-oxadiazol-3-yl}ethyl)methylamine hydrochloride (CAS 1332528-83-2)
- 6-(Ethylamino)-5-iodopyrimidin-4(3H)-one (CAS 1597391-41-7)
- 1-(3,5-Dichlorophenyl)-N-(3-oxo-3,4-dihydro-2H-benzo[b][1,4]oxazin-6-yl)methanesulfonamide (CAS 900019-85-4)
- 4199-89-7 5-Chloro-1,10-phenanthroline 1,10-Phenanthroline, 5-chloro- EINECS 224-098-1 (CAS 4199-89-7)
- Monocaprylin (CAS 26402-26-6)
- Semaglutide Impurity 186 (CAS CATO-C4X-2226186)
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