2,2-Methylenebis(5,5-dimethylcyclohexane-1,3-dione) CAS 2181-22-8
| CAS No. | 2181-22-8 |
| Molecular Formula | C17H24O4 |
| Molecular Weight | 292.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H24O4, 2,2-Methylenebis(5,5-dimethylcyclohexane-1,3-dione) contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 292.37 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
2,2-Methylenebis(5,5-dimethylcyclohexane-1,3-dione) (CAS 2181-22-8) is a high-purity analytical reference standard with the molecular formula C17H24O4 and a molecular weight of 292.37 g/mol.
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 | C17H24O4 |
| Molecular Weight | 292.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Methylenebis Standards
- 5,5'-Methylenebis(3,4-dimethyl-1H-pyrrole-2-carboxylic acid) (CAS 27226-49-9)
- 4,4'-Methylenebis(3-nitroaniline) (CAS 26946-33-8)
- 3,3'-Methylenebis(2-hydroxybenzoic acid) (CAS 5578-67-6)
- 6,6'-Methylenebis(benzo[d][1,3]dioxol-5-ol) (CAS 78188-48-4)
- 2,2'-Methylenebis-(4-chloro-6-methyl-phenol) (CAS 57693-35-3)
- Methylenebis[dimethyl(2-pyridyl)silane] (CAS 243468-48-6)
- 5,5'-Methylenebis(2-aminobenzoic acid) (CAS 7330-46-3)
- 1,1'-(Methylenebis(2-hydroxy-5,1-phenylene))diethanone (CAS 28467-22-3)
Recommended Standards
- 2,2-Dimethyl-5-(2-methyladamantan-2-yl)-1,3-dioxane-4,6-dione (CAS 400080-18-4)
- 2-[(2,6-dimethylpiperidin-1-yl)carbonyl]-4,5-dimethoxyaniline (CAS 953892-79-0)
- 2,2-Azoxydibenzoicacid (CAS 573-79-5)
- 2-Ethylhexyl Methyl Phthalate (CAS 56166-83-7)
- N-(5-Bromo-2-methoxybenzyl)-2-(3-fluorophenyl)ethanamine hydrobromide (CAS 1609409-20-2)
- 2-(2-(Trifluoromethyl)phenyl)butanoic acid (CAS 1226059-93-3)
- 2,5-Dichloro-4-nitro-benzoyl Chloride (CAS 148428-80-2)
- 2-(5-Hexyl-2-thienyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 5-Hexyl-2-thiopheneboronic acid pinacol ester 917985-54-7 (CAS 917985-54-7)
- tert-Butyl 3-(((6-ethoxypyrimidin-4-yl)oxy)methyl)piperidine-1-carboxylate (CAS 1353954-07-0)
- 2,9-diazaspiro[4.5]decane;dihydrochloride (CAS 1334499-87-4)
- 2,2-Bis(hydroxymethyl)propane-1,3-diyl bis(dihydrogen phosphate) ammonium salt (CAS 70851-57-9)
- 1H-Pyrazolo[3,4-d]pyrimidine, 3,4,6-trichloro-3,4,6-trichloro-1H-pyrazolo[3,4-d]pyrimidine (CAS 1936344-23-8)
- Apixaban-d3 (CAS 1131996-12-7)
- Tirzepatide(sodium salt) (CAS 2023788-19-2(free base))
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