Diisoheptyl phthalate CAS 41451-28-9
| CAS No. | 41451-28-9 |
| Molecular Formula | C22H34O4 |
| Molecular Weight | 362.50 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Diisoheptyl phthalate is closely related to a steroid core, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Diisoheptyl phthalate (CAS 41451-28-9), molecular formula C22H34O4 and molecular weight 362.50 g/mol, is a CATO reference standard with documented purity and traceability.
Diisoheptyl phthalate (C22H34O4) contains a steroid core, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
As a certified reference material (CRM), Diisoheptyl phthalate 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 | C22H34O4 |
| Molecular Weight | 362.50 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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.) | 1968 |
Recommended Standards
- Diheptyl phthalate (CAS 3648-21-3)
- Phthalic acid, bis-C6-C8-branched alkyl esters C7-rich (CAS 71888-89-6)
- Phthalic acid, bis-5-methylhexyl ester (CAS 90937-19-2)
- Phthalic acid, n-butyl-n-decyl ester (CAS 89-19-0)
- 5-Bromo-6-methylindole (CAS 1000343-13-4)
- 2-Chloro-N-(2-((cyclopropylmethyl)amino)cyclohexyl)acetamide (CAS 1353966-38-7)
- tert-Butyl methyl(1-methylazetidin-3-yl)carbamate (CAS 1379306-73-6)
- (1R,2S,3R,5R)-3-Amino-5-(hydroxymethyl)-1,2-cyclopentanediol HCl (CAS 79200-57-0)
- 6-bromo-1H-indazole-4-carbaldehyde (CAS 1444616-24-3)
- 6-Bromo-2-methoxyquinoxaline (CAS 1240621-89-9)
- 1-Ethoxy-4-((4-(4-propylcyclohexyl)phenyl)ethynyl)benzene (CAS 116903-48-1)
- N-(5-Methyl-1,2-oxazol-3-yl)-2-(pyridin-2-ylsulfanyl)acetamide (CAS 297149-96-3)
- 3-(4-Bromophenyl)-1-(2-fluorophenyl)propan-1-one (CAS 898761-70-1)
- Insulin Degludec Impurity 5 (CAS CATO-C4X-21575)
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