Bis(4-hydroxybutyl)terephthalate CAS 23358-95-4
| CAS No. | 23358-95-4 |
| Molecular Formula | C16H22O6 |
| Molecular Weight | 310.34 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.
Bis(4-hydroxybutyl)terephthalate (CAS 23358-95-4), molecular formula C16H22O6 and molecular weight 310.34 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C16H22O6, Bis(4-hydroxybutyl)terephthalate contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 310.34 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C16H22O6 |
| Molecular Weight | 310.34 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1963 |
Related Bis Standards
- N-(4-Hydroxybutyl)-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidine-6-carboxamide (CAS 946207-13-2)
- bis(4-hydroxybutyl) furan-2,5-dicarboxylate (CAS CATO-C3D-262625)
- 9-(4-Hydroxybutyl)-2-(phenylamino)-1H-purin-6(9H)-one (CAS 161363-19-5)
- 4-(3-Hydroxybutyl)-1,2-diphenylpyrazolidine-3,5-dione (CAS 568-76-3)
- 4-Hydroxybutyl 2-(2,4,5-trichlorophenoxy)acetate (CAS 40583-17-3)
- Bis(4-hydroxybutyl) adipate (CAS 20985-13-1)
- 5-((6-((4-Hydroxybutyl)amino)pyrimidin-4-yl)amino)pyrazine-2-carbonitrile (CAS 1137475-52-5)
- 4-(3-Hydroxybutyl)-1-(4-hydroxyphenyl)-2-phenylpyrazolidine-3,5-dione (CAS 7720-49-2)
Recommended Standards
- N-Benzyl-1-[6-(2,4-difluorophenyl)-2-pyridyl]methanamine (CAS 887985-29-7)
- Phenethyl 6-methoxy-2H-chromene-3-carboxylate (CAS 338760-80-8)
- Moracin C (CAS 69120-06-5)
- R,R-Warfarin Alcohol (CAS 40281-89-8)
- 4-[1-(4-fluorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl]-1,3-thiazol-2-amine (CAS 379240-65-0)
- 4-bromo-1-tert-butyl-triazole (CAS 1260666-19-0)
- 1,3,7-Triazaspiro[4.5]decan-2-one (CAS 1508008-77-2)
- N-benzyl-4-bromo-N-(2-hydroxyethyl)-1H-pyrrole-2-carboxamide (CAS 1184453-80-2)
- 3-Chloro-n-(cyclopropylmethyl)-4-methoxyaniline (CAS 1156170-95-4)
- Zotepine N-Oxide (CAS 63720-83-2)
- Trimethoxy(methyl)silane (CAS 1185-55-3)
- 2-(trifluoromethyl)-1,3-dioxolan-2-amine (CAS 70247-62-0)
- 4-(Methylamino)-3-nitrobenzoyl chloride (CAS 82357-48-0)
- Tirzepatide Impurity 14 (CAS CATO-C4X-324014)
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