6,7-Dihydrocyclopenta[b]pyran-2(5H)-one CAS 5650-69-1
| CAS No. | 5650-69-1 |
| Molecular Formula | C8H8O2 |
| Molecular Weight | 136.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 6,7-Dihydrocyclopenta[b]pyran-2(5H)-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.
CATO supplies 6,7-Dihydrocyclopenta[b]pyran-2(5H)-one (CAS 5650-69-1), a certified reference material (molecular formula C8H8O2, MW 136.15 g/mol) for analytical method development and quality control.
Structurally, 6,7-Dihydrocyclopenta[b]pyran-2(5H)-one (C8H8O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 136.15 g/mol, it falls into the low-molecular-weight range. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C8H8O2 |
| Molecular Weight | 136.15 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Dihydrocyclopenta Standards
- 1-Methyl-5,6-dihydrocyclopenta[c]pyrazol-4(1H)-one (CAS 344252-05-7)
- 6,7-Dihydrocyclopenta[c]pyran-3(5H)-one (CAS 6249-24-7)
- 1,2-Dihydrocyclopenta[c]pyrazole-3,4-dione (CAS 853657-85-9)
- 5,6-Dihydrocyclopenta[c]pyrrole-1,3(2H,4H)-dione (CAS 62291-38-7)
- 1-Methyl-4,6-dihydrocyclopenta[b]pyrrol-5(1H)-one (CAS 676486-43-4)
- 4,5-Dihydrocyclopenta[b]thiophen-6-one (CAS 5650-52-2)
- 6,7-Dihydrocyclopenta[b]pyridin-5-one (CAS 28566-14-5)
- 2-methyl-5,6-dihydrocyclopenta[c]pyrrol-4-one (CAS 1547028-27-2)
Recommended Standards
- 6,7-Dihydro-5H-pyrrolo[3,4-d]pyrimidin-2-amine (CAS 707539-41-1)
- 6,7-Dihydro-5H-pyrrolo[2,3-d]pyrimidin-4-amine (CAS 856600-01-6)
- 6,7-Dihydroimidazo[1,5-a]pyridin-8(5H)-one (CAS 426219-51-4)
- 6,7-Dihydro-5H-pyrrolo[1,2-c]imidazole-1-carbaldehyde (CAS 199192-01-3)
- (S)-tert-Butyl 3-oxo-2-phenylpiperazine-1-carboxylate (CAS 2411591-34-7)
- 5(S),12(R)-DiHETE(6-trans-LTB4) (CAS 71652-82-9)
- 6-Hydrazinopurine (CAS 5404-86-4)
- 1-(4-Ethoxyphenyl)-5-(methoxymethyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1049129-28-3)
- 618-47-3 Benzamide, 3-methyl- (9CI) m-Toluamide AI3-26774 EINECS 210-553-1 m-Methylbenzamide 3-Methylbenzamide NSC 2170 (CAS 618-47-3)
- CAS 2905-65-9 (CAS 2905-65-9)
- 3-Cyano-5-(5,5-dimethyl-1,3-dioxan-2-yl)valerophenone (CAS 898756-78-0)
- 1-(3,4-Dimethoxyphenyl)-2-phenylethan-1-one (CAS 3141-93-3)
- 7a-Hydroxy-4-cholesten-3-one (CAS 3862-25-7)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
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