1,4,4-Trimethyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylic acid ethyl ester CAS 802541-48-6
| CAS No. | 802541-48-6 |
| Molecular Formula | C13H18N2O3 |
| Molecular Weight | 250.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,4,4-Trimethyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylic acid ethyl ester (C13H18N2O3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
CATO supplies 1,4,4-Trimethyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylic acid ethyl ester (CAS 802541-48-6), a certified reference material (molecular formula C13H18N2O3, MW 250.29 g/mol) for analytical method development and quality control.
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), 1,4,4-Trimethyl-7-oxo-4,5,6,7-tetrahydro-1H-indazole-3-carboxylic acid ethyl ester 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 | C13H18N2O3 |
| Molecular Weight | 250.29 g/mol |
| Appearance | Off-white to pale 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Related Trimethyl Standards
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Recommended Standards
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- 2-(11-Hydroxy-3-oxo-3H-dibenzo[c,h]xanthen-7-yl)benzoic acid (CAS 51517-45-4)
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- 3-Pyrazol-1-ylpropanenitrile (CAS 88393-88-8)
- Ac, Gastrin Releasing Peptide (20-27), porcine (CAS 77714-20-6)
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