| CAS No. | 9005-09-8 |
| Molecular Formula | C4H4O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 264.66 g/mol gives 2-Butenedioic acid (2Z)-, polymer with chloroethene and ethenyl acetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-Butenedioic acid (2Z)-, polymer with chloroethene and ethenyl acetate (CAS 9005-09-8) is a high-purity analytical reference standard with the molecular formula C4H4O4C4H6O2C2H3Cl and a molecular weight of 264.66 g/mol.
The molecular framework of 2-Butenedioic acid (2Z)-, polymer with chloroethene and ethenyl acetate (C4H4O4C4H6O2C2H3Cl) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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), 2-Butenedioic acid (2Z)-, polymer with chloroethene and ethenyl acetate 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.
| Molecular Formula | C4H4O4 C4H6O2 C2H3Cl |
| Molecular Weight | 264.66 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Halogen Content | Cl-containing |