1,3-Benzenedicarboxylic acid, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid and 1,5-pentanediol, benzoate CAS 68856-22-4
| CAS No. | 68856-22-4 |
| Molecular Formula | C13H18O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1,3-Benzenedicarboxylic acid, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid and 1,5-pentanediol, benzoate (CAS 68856-22-4) is a high-purity analytical reference standard with the molecular formula C13H18O4C8H6O4C6H10O4C5H12O2 and a molecular weight of 654.71 g/mol.
The molecular framework of 1,3-Benzenedicarboxylic acid, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol, hexanedioic acid and 1,5-pentanediol, benzoate (C13H18O4C8H6O4C6H10O4C5H12O2) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
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 | C13H18O4 C8H6O4 C6H10O4 C5H12O2 |
| Molecular Weight | 654.71 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1976 |
Related Benzenedicarboxylic Standards
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- 1,3-Benzenedicarboxylic acid, polymer with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol and 2,2,4-trimethyl-1,3-pentanediol (CAS 106906-27-8)
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- 1,2-Benzenedicarboxylic acid, heptyl nonyl ester, branched and linear (CAS 111381-89-6)
- 1,2-Benzenedicarboxylic acid, heptyl undecyl ester, branched and linear (CAS 111381-90-9)
Recommended Standards
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- Semaglutide impurity 266 (CAS CATO-C4X-2226266)
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