4-Methyl-3-(4-methylphenyl)propiophenone CAS 20615-46-7
| CAS No. | 20615-46-7 |
| Molecular Formula | C17H18O |
| Molecular Weight | 238.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Methyl-3-(4-methylphenyl)propiophenone (CAS 20615-46-7), molecular formula C17H18O and molecular weight 238.32 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4-Methyl-3-(4-methylphenyl)propiophenone (C17H18O) contains a steroid core, a hydroxyl group, an ether linkage. 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 238.32 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 4-Methyl-3-(4-methylphenyl)propiophenone 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 | C17H18O |
| Molecular Weight | 238.32 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.) | 1962 |
Related Methyl Standards
- 1,3-Bis(4-methylphenyl)propan-2-one (CAS 70769-70-9)
- 2-Methyl-3-(3-methylphenyl)propiophenone (CAS 898790-31-3)
- 3-Methyl-3-(4-methylphenyl)propiophenone (CAS 898768-45-1)
- 4-Methyl-3-(2-methylphenyl)propiophenone (CAS 898789-10-1)
- 898790-35-7 3-(3-Methylphenyl)-1-(4-methylphenyl)propan-1-one DTXSID30644057 (CAS 898790-35-7)
- Ethyl 4-(4-methylphenyl)sulfanylbutanoate (CAS 20458-90-6)
- 7-Methyl-2-(4-methylphenyl)-1,3-benzoxazol-5-amine (CAS 1268000-81-2)
- 7-Methyl-2-(2-methylphenyl)-1,3-benzoxazol-5-amine (CAS 1315371-10-8)
Recommended Standards
- 4'-Tert-butyl[1,1'-biphenyl]-2-carbaldehyde (CAS 893738-46-0)
- 4,6-Di-tert-butylbenzene-1,2,3-triol (CAS 3934-77-8)
- 7-(4-Methoxyphenoxy)heptan-1-ol (CAS 910469-97-5)
- 4-(Tert-butyl)-2,6-bis(methoxymethyl)phenol (CAS 421546-91-0)
- 2,4-Dimethylpyrimidine-5-carbohydrazide (CAS 88317-45-7)
- 2-[4-(1-Butyl-pentyl)-piperidin-1-yl]-ethanol (CAS 865074-63-1)
- (5,5-dimethyloxolan-2-yl)methanamine hydrochloride (CAS 1803592-77-9)
- (5-(tert-Butyl)oxazol-2-yl)methanol (CAS 252662-39-8)
- (4-Methyl-benzyl)-(1-methyl-2-trifluoromethoxy-ethyl)-amine (CAS 1208079-07-5)
- 2-(3-Fluorophenyl)-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazine (CAS 1507939-22-1)
- Methyl (1S,4R)-2-azabicyclo[2.2.1]Heptane-4-carboxylate (CAS 2055277-84-2)
- 3-Hydroxy-3-phenyl-2-(pyridin-2-yl)isoindolin-1-one (CAS 3532-41-0)
- 1-cyclopropyl-2-phenylpiperidin-4-one (CAS 1909306-32-6)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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