Merrifield resin (200-400 mesh, 1.10-1.45 mmol/g) CAS 55844-94-5
| CAS No. | 55844-94-5 |
| Molecular Formula | C7H8ClO4P |
| Molecular Weight | 222.56 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Merrifield resin (200-400 mesh, 1.10-1.45 mmol/g) (CAS 55844-94-5), molecular formula C7H8ClO4P and molecular weight 222.56 g/mol, is a CATO reference standard with documented purity and traceability.
Merrifield resin (200-400 mesh, 1.10-1.45 mmol/g) (C7H8ClO4P) contains a phosphate ester group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C7H8ClO4P |
| Molecular Weight | 222.56 g/mol |
| 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, water |
| 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) | 3.5 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Cl-containing |
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- Semaglutide impurity 256 (CAS CATO-C4X-2226256)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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