1,3-Bis(4-methylphenyl)propan-2-one CAS 70769-70-9
| CAS No. | 70769-70-9 |
| Molecular Formula | C17H18O |
| Molecular Weight | 238.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1,3-Bis(4-methylphenyl)propan-2-one (CAS 70769-70-9), molecular formula C17H18O and molecular weight 238.32 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1,3-Bis(4-methylphenyl)propan-2-one (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 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).
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), 1,3-Bis(4-methylphenyl)propan-2-one 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.) | 1977 |
Related Bis Standards
- 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)
- 4-Methyl-3-(4-methylphenyl)propiophenone (CAS 20615-46-7)
- 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
- 1,2-Dihydroxy-3,4-epoxy-1,2,3,4-tetrahydrophenanthrene (CAS 67737-62-6)
- 1,3-Di-m-tolylpropan-1-one (CAS 898790-33-5)
- 1-(O-tolyl)-3-(p-tolyl)propan-1-one (CAS 898768-42-8)
- 1,3-Di-o-tolylpropan-1-one (CAS 898789-04-3)
- 5-Chloro-2-oxo-1-(3-(trifluoromethyl)benzyl)-N-(3-(trifluoromethyl)phenyl)-1,2-dihydropyridine-3-carboxamide (CAS 338977-57-4)
- ((1R,2R)-2-Pentylcyclopropyl)boronic acid (CAS 294202-37-2)
- 3-(2-(2-Methoxyacetamido)phenoxy)thiophene-2-carboxylic acid (CAS 900019-09-2)
- 3,4-Bis[(tetrahydro-2H-pyran-2-yl)oxy]benzeneacetic Acid Methyl Ester (CAS 582289-84-7)
- LCZ-696 Impurity 61 (CAS CATO-C4X-169661)
- 2-Amino-4-chloro-6-methylphenol (CAS 80526-44-9)
- 1-(2-Fluoroethyl)-N-((1-methyl-1H-pyrazol-4-yl)methyl)-1H-pyrazol-4-amine hydrochloride (CAS 1856075-10-9)
- (2R,5R)-2,5-Dimethylmorpholine Hydrochloride (CAS 1639886-52-4)
- N-Ethyldodecanamide (CAS 35936-85-7)
- (Tyr9)-Cholecystokinin Octapeptide (sulfated) (H-9770.0005) (CAS 96607-61-3)
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