2,3,4,9-Tetrahydro-1H-carbazole-8-carboxylic acid CAS 65764-56-9
| CAS No. | 65764-56-9 |
| Molecular Formula | C13H13NO2 |
| Molecular Weight | 215.25 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2,3,4,9-Tetrahydro-1H-carbazole-8-carboxylic acid.
2,3,4,9-Tetrahydro-1H-carbazole-8-carboxylic acid (CAS 65764-56-9), molecular formula C13H13NO2 and molecular weight 215.25 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 2,3,4,9-Tetrahydro-1H-carbazole-8-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 215.25 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C13H13NO2 |
| Molecular Weight | 215.25 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 1 |
Related Tetrahydro Standards
- 2-Phenyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridin-3(2H)-one (CAS 1215484-85-7)
- 2-Methyl-3-(tetrahydro-2H-pyran-2-carboxamido)propanoic acid (CAS 1250428-49-9)
- 4-(Tetrahydro-2H-pyran-4-yl)morpholine-3-carboxylic acid (CAS 1316217-45-4)
- 2-Phenyl-4,5,6,7-tetrahydro-2H-pyrazolo[3,4-b]pyridin-3-ol (CAS 1707609-49-1)
- (R)-2,3,4,9-TETRAHYDRO-1H-PYRIDO[3,4-B]INDOLE-3-CARBOXAMIDE (CAS 89013-95-6)
- (S)-2,3,4,9-TETRAHYDRO-1H-PYRIDO[3,4-B]INDOLE-3-CARBOXAMIDE (CAS 89013-99-0)
- 2-(5,6,7,8-Tetrahydro-[1,2,4]triazolo[4,3-a]pyridin-3-yl)phenol (CAS 240115-79-1)
- 2,3,4,9-Tetrahydro-1H-carbazole-1-carboxylic acid (CAS 42497-46-1)
Recommended Standards
- 2,3,4,9-Tetrahydro-1H-carbazole-7-carboxylic acid (CAS 729613-71-2)
- 2,4-diethyl 1H-pyrrole-2,4-dicarboxylate (CAS 55942-40-0)
- 2,3,4,9-Tetrahydro-1H-carbazole-6-carboxylic acid (CAS 36729-27-8)
- 2,5,7-Trimethylquinoline-3-carboxylic acid (CAS 948290-95-7)
- 2,2,4,4,6,8,8-Heptamethylnonane (CAS 4390-04-9)
- rel-(2R,4S)-Pentane-2,4-diol (CAS 3950-21-8)
- N-Boc-DL-tyrosine (CAS 142847-18-5)
- 4-(Aminomethyl)-2-(difluoromethyl)-5-methylpyridin-3-ol (CAS 1806973-99-8)
- N-cyclohexyl-1-tosylpiperidine-4-carboxamide (CAS 433952-36-4)
- Atrasentan Impurity 28 (CAS 1073590-44-9)
- 8-Methoxy-3,4-dihydroquinazolin-2-amine (CAS 754975-53-6)
- 5-Chloro-2-(oxolan-3-yloxy)benzonitrile (CAS 1375471-48-9)
- Methyl 4-cyano-2-nitrobenzoate (CAS 52449-76-0)
- Liraglutide Impurity 10 TFA Salt (CAS CATO-C4X-199210)
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