1,8-Dihydropyrazolo[3,4-b]indole-3-carboxylic acid CAS 890095-82-6
| CAS No. | 890095-82-6 |
| Molecular Formula | C10H7N3O2 |
| Molecular Weight | 201.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C10H7N3O2, 1,8-Dihydropyrazolo[3,4-b]indole-3-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 201.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1,8-Dihydropyrazolo[3,4-b]indole-3-carboxylic acid (CAS 890095-82-6), molecular formula C10H7N3O2 and molecular weight 201.18 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C10H7N3O2 |
| Molecular Weight | 201.18 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 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Dihydropyrazolo Standards
- 7-Methyl-1,7-dihydropyrazolo[3,4-c][1,2]thiazin-4(3H)-one 2,2-dioxide (CAS 2137593-81-6)
- 5-Oxo-4,5-dihydropyrazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 197367-83-2)
- 5-Methyl-4,5-dihydropyrazolo[3,4-e][1,2,4]thiadiazin-3(2H)-one 1,1-dioxide (CAS 1708401-57-3)
- 1,10b-dihydropyrazolo[1,5-c]quinazoline-5-thiol (CAS 59553-09-2)
- Ethyl 2,3-dihydropyrazolo[5,1-b]thiazole-6-carboxylate (CAS 623565-41-3)
- Ethyl 2,3-dihydropyrazolo[5,1-b]thiazole-7-carboxylate (CAS 623565-42-4)
- Ethyl 4,6-dihydropyrazolo[1,5-c]thiazole-2-carboxylate (CAS 623564-65-8)
- 6-Propyl-2,3-dihydropyrazolo[5,1-b]oxazole-7-carboxylic acid (CAS 1935452-08-6)
Recommended Standards
- 1-(1-Carboxyethyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 43094-89-9)
- 1,8-Dihydro-Pyrrolo[3,2-g]indazole-3-carboxylic acid (CAS 865886-90-4)
- 1-(1-Carboxyethyl)-5-oxopyrrolidine-2-carboxylic acid (CAS 857425-57-1)
- 1-Amino-[1,2,4]triazolo[4,3-a]quinazolin-5(3H)-one (CAS 404578-73-0)
- cis-4-Phenyl-cyclohexylamine hydrochloride (CAS 5769-09-5)
- 2,5-Dihydro-5-hydroxy-2-furanone (CAS 14032-66-7)
- (5E)-5-{[4-(3-fluoropropoxy)phenyl]methylidene}-1,3-thiazolidine-2,4-dione (CAS 477857-21-9)
- N-Cyano-N-((5-methylpyrazin-2-yl)methyl)acetimidamide (CAS 135410-82-1)
- 3-Fluoro-2-(trifluoromethyl)benzonitrile (CAS 261951-81-9)
- 1,5-Difluoro-2-(3-methylbutoxy)-4-nitrobenzene (CAS 1881330-70-6)
- Ethyl 2-(methylthio)-4-(2-(phenylamino)ethoxy)pyrimidine-5-carboxylate (CAS 34753-19-0)
- 4-(Pyridin-3-yl)-3-(trifluoromethyl)benzene-1-sulfonyl chloride (CAS 1214381-07-3)
- 2-([1,2,4]Triazolo[1,5-a]pyridin-2-yl)acetonitrile (CAS 1417189-82-2)
- HA Peptide (CAS 92000-76-5)
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