4-Acetoxy-2-methylbenzophenone CAS 52981-06-3
| CAS No. | 52981-06-3 |
| Molecular Formula | C16H14O3 |
| Molecular Weight | 254.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Acetoxy-2-methylbenzophenone (CAS 52981-06-3), molecular formula C16H14O3 and molecular weight 254.28 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H14O3, 4-Acetoxy-2-methylbenzophenone contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 254.28 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).
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 | C16H14O3 |
| Molecular Weight | 254.28 g/mol |
| Appearance | Pale yellow to 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
Related Acetoxy Standards
- 2-Acetoxy-2-methylbenzophenone (CAS 890098-87-0)
- 2-Acetoxy-3-methylbenzophenone (CAS 890098-89-2)
- 2-Acetoxy-4-methylbenzophenone (CAS 890098-91-6)
- 4-Acetoxy-3-methylbenzophenone (CAS 52981-07-4)
- 2-Acetoxy-2-(diethoxyphosphoryl)acetic acid (CAS 205264-44-4)
- [4-acetoxy-3-(trifluoromethyl)phenyl]boronic acid (CAS 2304633-90-5)
- 2'-Acetoxy-5-chlorovalerophenone (CAS 1017060-87-5)
- 3'-Acetoxy-5-chlorovalerophenone (CAS 898786-91-9)
Recommended Standards
- 4,8-Dimethoxy-1-vinyl-9H-pyrido[3,4-b]indole (CAS 65236-62-6)
- 4-(Furan-2-ylmethyl)-3-methyl-1-phenyl-1H-pyrazol-5(4H)-one (CAS 58789-61-0)
- 4-Allyloxy-2-hydroxybenzophenone (CAS 2549-87-3)
- 4-(Dibenzo[b,d]furan-3-yl)butanoic acid (CAS 6948-74-9)
- 3-(Methylthio)propionic acid (CAS 646-01-5)
- 2-((4-Chloropyrimidin-2-yl)oxy)benzonitrile (CAS 1159826-56-8)
- 5-(4-Chlorophenyl)-2-(1,3-dioxolan-2-yl)furan-3-carboxylic acid (CAS 306936-13-0)
- 3'-Chloro-4'-methyl-[1,1'-biphenyl]-2-carboxylic acid (CAS 71501-51-4)
- 3-Bromo-2,4-difluoro-6-iodoaniline (CAS 2219373-70-1)
- 2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,17,17,18,18,18-Pentatriacontafluorooctadecan-1-ol (CAS 242142-82-1)
- 3-(3,5-Dimethylisoxazol-4-yl)-N-((3-phenyl-1,2,4-oxadiazol-5-yl)methyl)propanamide (CAS 1235647-53-6)
- 1-((Bromomethyl)sulfonyl)piperazine (CAS 1432792-71-6)
- Pyrrolcarbonyltaloside (CAS 912539-02-7)
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