4-tert-Butyl-3,5-dimethylbenzophenone CAS 55709-39-2
| CAS No. | 55709-39-2 |
| Molecular Formula | C19H22O |
| Molecular Weight | 266.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-tert-Butyl-3,5-dimethylbenzophenone is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
4-tert-Butyl-3,5-dimethylbenzophenone (CAS 55709-39-2), molecular formula C19H22O and molecular weight 266.38 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C19H22O, 4-tert-Butyl-3,5-dimethylbenzophenone 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 266.38 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C19H22O |
| Molecular Weight | 266.38 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Recommended Standards
- 4-tert-Butyl-3,4-dimethylbenzophenone (CAS 951884-25-6)
- 4-tert-Butyl-4-ethylbenzophenone (CAS 952024-41-8)
- 4-tert-Butyl-2-ethylbenzophenone (CAS 951884-94-9)
- 5-(2-(Methylthio)ethyl)-3-phenyl-2-thioxoimidazolidin-4-one (CAS 4370-90-5)
- Methyl 4-hydrazinyl-3-nitrobenzoate (CAS 87054-48-6)
- Basic Blue 11 (CAS 2185-86-6)
- [[(4-Ethyl-3,5-dimethyl-1H-pyrrol-2-yl)(4-ethyl-3,5-dimethyl-2H-pyrrol-2-ylidene)methyl]methane](difluoroborane) (CAS 131083-16-4)
- N-(3,4-dimethylphenyl)-2-((4-(3-phenylthioureido)phenyl)thio)acetamide (CAS 763128-88-7)
- 3,6-Diiodo-2-(5-iodofuran-2-yl)imidazo[1,2-a]pyridine (CAS 61982-67-0)
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- (4-(2-Ethoxy-2-oxoethoxy)phenyl)boronic acid (CAS 282116-97-6)
- 3-(4-(Benzhydryloxy)piperidin-1-yl)propan-1-amine (CAS 101620-72-8)
- C-Peptide (human) (CAS 33017-11-7)
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