3-Chloro-4-ethoxybenzophenone CAS 951884-55-2
| CAS No. | 951884-55-2 |
| Molecular Formula | C15H13ClO2 |
| Molecular Weight | 260.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-Chloro-4-ethoxybenzophenone (CAS 951884-55-2), molecular formula C15H13ClO2 and molecular weight 260.72 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3-Chloro-4-ethoxybenzophenone (C15H13ClO2) contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 260.72 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 3-Chloro-4-ethoxybenzophenone 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.
Physical & Chemical Properties
| Molecular Formula | C15H13ClO2 |
| Molecular Weight | 260.72 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
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Recommended Standards
- 3-Amino-N-(5-chloro-2-methylphenyl)benzamide (CAS 897595-54-9)
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- 3-Amino-N-(3-chloro-2-methylphenyl)benzamide (CAS 897595-50-5)
- 3-Chloro-6-((7-methyl-2,3-dihydro-1H-inden-4-yl)oxy)pyridazine (CAS 303010-12-0)
- 3,3-Diphenylindolin-2-one (CAS 1922-79-8)
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- N,3,3-Trimethyl-1-(pyrrolidin-1-yl)butan-2-amine (CAS 672310-03-1)
- 2-((4S,5R,6S)-5,6-Dihydroxy-5,6-dihydro-4H-cyclopenta[c]furan-4-yl)acetic acid (CAS 752225-57-3)
- 2-Bromooxazole hydrochloride (CAS 1305712-69-9)
- 3-[(E)-2-[(3-Chlorophenyl)amino]-1-nitroethenyl]-1,3-dihydro-2-benzofuran-1-one (CAS 320420-37-9)
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