((4-Methyl-1,3-phenylene)bis(methylene))dibenzene CAS 94871-33-7
| CAS No. | 94871-33-7 |
| Molecular Formula | C21H20 |
| Molecular Weight | 272.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C21H20, ((4-Methyl-1,3-phenylene)bis(methylene))dibenzene contains a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 272.38 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).
CATO supplies ((4-Methyl-1,3-phenylene)bis(methylene))dibenzene (CAS 94871-33-7), a certified reference material (molecular formula C21H20, MW 272.38 g/mol) for analytical method development and quality control.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures ((4-Methyl-1,3-phenylene)bis(methylene))dibenzene under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H20 |
| Molecular Weight | 272.38 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
Related Methyl Standards
- 2,2′-(1,3-Phenylene)bis[4-ethyl-4,5-dihydrooxazole] (CAS 1240037-59-5)
- 2,2′-(1,2-Phenylene)bis[4,5-dihydro-4,4-dimethyloxazole] (CAS 131380-84-2)
- 2,2′-(1,2-Phenylene)bis[4-ethyl-4,5-dihydrooxazole] (CAS 220337-20-2)
- 2,2′-(1,4-Phenylene)bis[4,5-dihydro-4,4-dimethyloxazole] (CAS 25151-49-9)
- ((2-Methyl-1,4-phenylene)bis(oxy))bis(trimethylsilane) (CAS 78018-53-8)
- 1,2-Phenylene-bis-maleimide (CAS 13118-04-2)
- 1,1'-(1,4-Phenylene)bis(1H-pyrazole-4-carbaldehyde) (CAS 1620396-74-8)
- 1,1'-(4-Methyl-1,3-phenylene)bis(3,3-dimethylurea) (CAS 17526-94-2)
Recommended Standards
- 19671-53-5 CTK4E2014 Estra-4,9-dien-17-one,3b-hydroxy- (8CI) (CAS 19671-53-5)
- 1,2-Dibenzyl-3-methyl-benzene (CAS 53585-53-8)
- Tert-butyl ((1-(3-hydroxypropyl)piperidin-4-yl)methyl)carbamate (CAS 1824027-19-1)
- 12-Ethoxy-11-methyl-12-oxododecanoic acid (CAS 2198995-70-7)
- 1-(2-Allylphenoxy)-3-(piperidin-1-yl)propan-2-ol (CAS 391219-51-5)
- 1-Methylspiro[indoline-3,3'-pyrrolidin]-2-one (CAS 887596-14-7)
- 1,2-Dichlorooctane (CAS 21948-46-9)
- Mhy553 (CAS 6265-56-1)
- N-(3-Cyclopropoxy-6-(methylthio)pyridin-2-yl)methanesulfonamide (CAS 1243454-92-3)
- 5,7-Dimethyl-2-(pyridin-4-yl)indoline (CAS 591757-05-0)
- Ethyl 1-(5-methyl-6-phenylthieno[2,3-d]pyrimidin-4-yl)piperidine-4-carboxylate (CAS 1858257-30-3)
- Minocycline Impurity 60 (CAS CATO-C4X-169960)
- 3,3,3-Trideuterio-1-[4-(3-hydroxyphenyl)-1-methylpiperidin-4-yl]propan-1-one (CAS 1346601-42-0)
- Polymyxin B nonapeptide TFA (CAS 2220175-42-6)
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