5,6-Dihydrocyclopenta[c]pyrazol-4(1H)-one CAS 596844-18-7
| CAS No. | 596844-18-7 |
| Molecular Formula | C6H6N2O |
| Molecular Weight | 122.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 5,6-Dihydrocyclopenta[c]pyrazol-4(1H)-one (CAS 596844-18-7), a certified reference material (molecular formula C6H6N2O, MW 122.12 g/mol) for analytical method development and quality control.
Owing to an amide group, a hydroxyl group, an ether linkage, an aromatic ring system, 5,6-Dihydrocyclopenta[c]pyrazol-4(1H)-one is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 122.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
As a certified reference material (CRM), 5,6-Dihydrocyclopenta[c]pyrazol-4(1H)-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 | C6H6N2O |
| Molecular Weight | 122.12 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 2 |
Related Dihydrocyclopenta Standards
- 6,7-Dihydrocyclopenta[b]pyridin-5-one (CAS 28566-14-5)
- 1-Methyl-4,6-dihydrocyclopenta[b]pyrrol-5(1H)-one (CAS 676486-43-4)
- 1,2-Dihydrocyclopenta[c]pyrazole-3,4-dione (CAS 853657-85-9)
- 1-Methyl-5,6-dihydrocyclopenta[c]pyrazol-4(1H)-one (CAS 344252-05-7)
- 6,7-Dihydrocyclopenta[b]pyran-2(5H)-one (CAS 5650-69-1)
- 6,7-Dihydrocyclopenta[c]pyran-3(5H)-one (CAS 6249-24-7)
- 5,6-Dihydrocyclopenta[c]pyrrole-1,3(2H,4H)-dione (CAS 62291-38-7)
- 4,5-Dihydrocyclopenta[b]thiophen-6-one (CAS 5650-52-2)
Recommended Standards
- 5,6-Dihydro-7H-pyrrolo[1,2-c]imidazol-7-one (CAS 426219-43-4)
- 5-Aminonicotinaldehyde (CAS 859987-03-4)
- 5,6-Dihydro-4H-cyclopenta[b]furan-4-one (CAS 849769-25-1)
- 5-Formyl-2-methylpyrimidine (CAS 90905-33-2)
- 2-Bromo-8-(2,3,4-trifluorophenoxy)-5,6,7,8-tetrahydro-[1,2,4]triazolo[1,5-a]pyridine (CAS 2443488-25-1)
- (oxolan-3-yl)methanesulfonyl fluoride (CAS 1258640-07-1)
- 4-(2,6-Dichlorophenyl)-1,2-dihydro-3h-pyrazol-3-imine (CAS 92403-50-4)
- Methyl 3-(3-allylthioureido)-3-(benzo[d][1,3]dioxol-5-yl)propanoate (CAS 866144-43-6)
- Mirogabalin Impurity 22 Benzenesulfonic Acid (CAS 138245-15-4(free base))
- Methyl 2-fluoro-2-(phenanthren-1-yl)propanoate (CAS 843614-85-7)
- 5-Butyl-2-(4-ethylphenyl)pyrimidine (CAS 64835-59-2)
- Isopropyl-(6-piperidin-3-yl-4-trifluoromethyl-1H-pyrazolo[3,4-b]pyridin-3-yl)-amine (CAS 1316225-60-1)
- 6-bromo-2,3,4,9-tetrahydro-1H-carbazol-1-one (CAS 59514-18-0)
- Semaglutide impurity 205 (CAS CATO-C4X-2226205)
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