2-Methylidene-5,8-dioxaspiro[3.4]octane CAS 99620-40-3
| CAS No. | 99620-40-3 |
| Molecular Formula | C7H10O2 |
| Molecular Weight | 126.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 126.15 g/mol gives 2-Methylidene-5,8-dioxaspiro[3.4]octane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 2-Methylidene-5,8-dioxaspiro[3.4]octane (CAS 99620-40-3), a certified reference material (molecular formula C7H10O2, MW 126.15 g/mol) for analytical method development and quality control.
Structurally, 2-Methylidene-5,8-dioxaspiro[3.4]octane (C7H10O2) contains a carboxylic acid group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 126.15 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C7H10O2 |
| Molecular Weight | 126.15 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
Related Methylidene Standards
- 3-Methylidene-8-azabicyclo[3.2.1]octane (CAS 1688730-50-8)
- 2-methylidene-1$l^{6}-thiolane-1,1-dione (CAS 79496-71-2)
- 7-Methylidene-1,4-dioxaspiro[4.5]decane (CAS 104598-81-4)
- 3-methylidene-1-phenylazetidin-2-one (CAS 69193-55-1)
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Recommended Standards
- 2-Methylcyclopent-1-ene-1-carboxylic acid (CAS 67209-77-2)
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- 2-Oxabicyclo[3.2.1]octan-3-one (CAS 5724-61-8)
- 3-((Pyridin-3-ylmethyl)thio)-6-(p-tolyl)pyridazine (CAS 872694-78-5)
- 2,3-Dimethyl-6-(4-methylpiperazin-1-yl)quinoxaline (CAS 383148-06-9)
- 1-(5-(tert-Butyl)isoxazol-3-yl)-3-methylpyrrolidin-2-one (CAS 92338-74-4)
- 2-Bromo-3-methylpyridine 2-bromo-3-picoline 2-bromo-3-methyl pyridine 3-Methyl-2-bromopyridine 3430-17-9 (CAS 3430-17-9)
- 3-(4-Fluorophenyl)-2-(piperidin-2-yl)propan-1-amine (CAS 1306603-94-0)
- 3-Methyl-2-thioxo-2H-pyrido[1,2-a][1,3,5]triazin-4(3H)-one (CAS 61737-20-0)
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