2,4,5,6,7,8-Hexahydrocyclohepta[c]pyrazole-3-carboxylic acid CAS 842972-72-9
| CAS No. | 842972-72-9 |
| Molecular Formula | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2,4,5,6,7,8-Hexahydrocyclohepta[c]pyrazole-3-carboxylic acid (CAS 842972-72-9) is a high-purity analytical reference standard with the molecular formula C9H12N2O2 and a molecular weight of 180.20 g/mol.
Based on its molecular formula C9H12N2O2, 2,4,5,6,7,8-Hexahydrocyclohepta[c]pyrazole-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 180.20 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C9H12N2O2 |
| Molecular Weight | 180.20 g/mol |
| Appearance | Off-white to pale 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
Related Hexahydrocyclohepta Standards
- 1,4,5,6,7,8-Hexahydrocyclohepta[c]pyrazole-3-carboxylic acid (CAS 856256-63-8)
- 1-(1,4,5,6,7,8-Hexahydrocyclohepta[c]pyrazol-3-yl)-N-methylmethanamine (CAS 910442-17-0)
- 1-Methyl-1,4,5,6,7,8-hexahydrocyclohepta[d]imidazole-2-carbaldehyde (CAS 1706449-28-6)
- Hexahydrocyclohepta[c]pyrrole-1,3(2H,3aH)-dione (CAS 4432-21-7)
- Methyl 1,4,5,6,7,8-hexahydrocyclohepta[b]pyrrole-2-carboxylate (CAS 100445-46-3)
- 5,6,7,8,9,10-hexahydrocyclohepta[b]indole (CAS 2047-89-4)
- 1-Methyl-1,4,5,6,7,8-hexahydrocyclohepta[d]imidazole-2-carboxylic acid (CAS 1706449-64-0)
- 5-Methyl-5,6,7,8,9,10-hexahydrocyclohepta[b]indole (CAS 52751-32-3)
Recommended Standards
- 2,3-Dimethyl-2,3,6,7-tetrahydropyrrolo[1,2-a]pyrazine-1,4-dione (CAS 225235-41-6)
- 2,4-Dihydroxy-5-isopropylbenzaldehyde (CAS 958888-27-2)
- 2,3-dImethoxy-5-methylbenzaldehyde (CAS 5701-86-0)
- 2,4-Dimethoxy-3-methylbenzaldehyde (CAS 7149-92-0)
- N-methyl-1-(4-(pyrimidin-2-yl)phenyl)methanamine (CAS 886851-48-5)
- 2-Amino-N-(4-methylphenyl)benzamide (CAS 32212-38-7)
- 1-Methyl-N-(pyridin-2-ylmethyl)piperidin-4-amine (CAS 852698-08-9)
- allo-Chrysoketone (CAS 6051-98-5)
- Fmoc-Dap(Aloc)-OH (CAS 188970-92-5)
- 3-Bromo-7-chloropyrazolo[1,5-a]pyrimidine (CAS 877173-84-7)
- 4-(4-carboxy-phenyl)-piperazine-1-carboxylic acid <I>tert</I>-butyl ester (CAS 162046-66-4)
- 1,1-Difluoro-3-(3-methylbenzo[d]thiazol-2(3H)-ylidene)propan-2-one (CAS 41131-04-8)
- 2-(Dimethylamino)-9-((2R,3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxytetrahydrofuran-2-yl)-1H-purin-6(9H)-one (CAS 113886-73-0)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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