Diisobutyl terephthalate CAS 18699-48-4
| CAS No. | 18699-48-4 |
| Molecular Formula | C16H22O4 |
| Molecular Weight | 278.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Diisobutyl terephthalate (CAS 18699-48-4), a certified reference material (molecular formula C16H22O4, MW 278.34 g/mol) for analytical method development and quality control.
Structurally, Diisobutyl terephthalate (C16H22O4) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 278.34 g/mol, it falls into the medium-molecular-weight range. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
CATO manufactures Diisobutyl terephthalate 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 | C16H22O4 |
| Molecular Weight | 278.34 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.) | 1962 |
Related Diisobutyl Standards
- Diisobutyl Cyclohexane-1,2-Dicarboxylate (CAS 70969-58-3)
- Diisobutyl phenyl phosphate (CAS 38299-61-5)
- 4,7-Diisobutyl-1,10-phenanthroline (CAS 300680-81-3)
- Diisobutyl Adipate (CAS 141-04-8)
- (3,5-Diisobutyl-1H,3H,5H-oxazolo[3,4-c]oxazol-7a(7H)-yl)methanol (CAS 956763-68-1)
- Diisobutyl Nonanedioate (CAS 105-80-6)
- diisobutyl glutarate (CAS 71195-64-7)
- Diisobutyl 2-methylmaleate (CAS 10061-71-9)
Recommended Standards
- Phthalic Acid, Bis-Iso-Butyl Ester (CAS 84-69-5)
- Mono(2-ethylhexyl) Terephthalate (CAS 155603-50-2)
- Phthalic Acid, Bis-Butyl Ester (CAS 84-74-2)
- Phthalic Acid, Mono-2-Ethylhexyl Ester (CAS 4376-20-9)
- 1-Bromo-4-((4-(heptan-4-yl)phenoxy)methyl)benzene (CAS 2007917-46-4)
- Oxazole, 2,2′-(2-methyl-1-propenylidene)bis[4,5-dihydro-4-phenyl-, (4S,4′S)- (CAS 876406-06-3)
- 9-(3,5-Di(triphenylen-2-yl)phenyl)-9H-carbazole (CAS 1498411-20-3)
- 4-[(1H-Pyrazol-1-yl)methyl]benzaldehyde (CAS 887922-90-9)
- 2-(1-Methyl-3-phenyl-1H-1,2,4-triazol-4(5H)-yl)ethanol (CAS 94655-96-6)
- (1-Butyl-1H-imidazol-4-yl)methanamine (CAS 1368710-67-1)
- (5-((4-Chlorophenyl)sulfonyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl acetate (CAS 318469-27-1)
- 1-Chloro-5-fluoro-6-methoxyisoquinoline (CAS 630423-30-2)
- 2-(Dimethylamino)-1-(4-fluorophenyl)ethanone (CAS 709-23-9)
- Semaglutide Impurity 187 (CAS CATO-C4X-2226187)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com