Trans-2,4-dimethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-dioxolane CAS 131812-52-7
| CAS No. | 131812-52-7 |
| Molecular Formula | C19H28O2 |
| Molecular Weight | 288.42 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Trans-2,4-dimethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-dioxolane.
Trans-2,4-dimethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-dioxolane (CAS 131812-52-7), molecular formula C19H28O2 and molecular weight 288.42 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Trans-2,4-dimethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-dioxolane (C19H28O2) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), Trans-2,4-dimethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-dioxolane 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 | C19H28O2 |
| Molecular Weight | 288.42 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1994 |
Related Trans Standards
- Cis-2,4-dimethyl-2-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-1,3-dioxolane (CAS 131812-51-6)
- 2,2"-Dimethyl-[1,1':4',1"-terphenyl]-4,4"-diamine (CAS 1154654-11-1)
- 2',5'-Dimethyl-[1,1':4',1''-terphenyl]-4,4''-diamine (CAS 152219-88-0)
- 2,5-Dimethyl-4,6-diphenyl-1,2,3,5-tetrahydropyrrolo[3,4-c]pyrrole (CAS 400085-71-4)
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- (E)-[1-(2,4-Dimethyl-1,3-thiazol-5-yl)ethylidene]amino 4-methylbenzoate (CAS 477872-42-7)
Recommended Standards
- 1,3-Dioxolane, 2,4-dimethyl-2-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)- (CAS 131812-67-4)
- 2-(((Tert-butyldimethylsilyl)oxy)methyl)furo[3,2-b]pyridine-6-carbonitrile (CAS 1186310-75-7)
- 4(Z),7(Z),10(Z),13(Z),16(Z)-Nonadecapentaenoic Acid (CAS 136156-13-3)
- 3-Methoxyestra-2,5(10)-diene-17β-ol (CAS 1091-93-6)
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