2-Chloro-1-[3-(furan-2-yl)-7-(furan-2-ylmethylidene)-3,3a,4,5,6,7-hexahydro-2H-indazol-2-yl]ethan-1-one CAS 380431-18-5
| CAS No. | 380431-18-5 |
| Molecular Formula | C18H17ClN2O3 |
| Molecular Weight | 344.79 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-Chloro-1-[3-(furan-2-yl)-7-(furan-2-ylmethylidene)-3,3a,4,5,6,7-hexahydro-2H-indazol-2-yl]ethan-1-one (CAS 380431-18-5), a certified reference material (molecular formula C18H17ClN2O3, MW 344.79 g/mol) for analytical method development and quality control.
2-Chloro-1-[3-(furan-2-yl)-7-(furan-2-ylmethylidene)-3,3a,4,5,6,7-hexahydro-2H-indazol-2-yl]ethan-1-one (C18H17ClN2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 2-Chloro-1-[3-(furan-2-yl)-7-(furan-2-ylmethylidene)-3,3a,4,5,6,7-hexahydro-2H-indazol-2-yl]ethan-1-one 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 | C18H17ClN2O3 |
| Molecular Weight | 344.79 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
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Recommended Standards
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- 2-(4-Ethyl-1-hydroxycyclohexyl)-2,2-difluoroacetic acid (CAS 1249661-13-9)
- 6-Bromo-3-methyl-3,4-dihydro-2H-benzo[e][1,3]oxazine (CAS 7331-78-4)
- 6-Fluoronaphthalene-1-carboxylic acid, 97% (CAS 575-08-6)
- Methyl (2S)-2-{[(9H-fluoren-9-ylmethoxy)carbonyl]amino}-3-(naphthalen-2-yl)propanoate (CAS 1820583-78-5)
- AG 556, >98% (CAS 133550-41-1)
- 2-(3,4-dimethoxyphenyl)-N-hydroxyacetamide (CAS 33793-80-5)
- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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