Amphotericin B Impurity 19 CAS CATO-C4X-184419
| CAS No. | CATO-C4X-184419 |
| Molecular Formula | C47H72O18 |
| Molecular Weight | 925.06 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Amphotericin B Impurity 19.
CATO supplies Amphotericin B Impurity 19 (CAS CATO-C4X-184419), a pharmacopoeial impurity reference standard (molecular formula C47H72O18, MW 925.06 g/mol) used for the identification and quantification of trace impurities in APIs.
Amphotericin B Impurity 19 (C47H72O18) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
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 | C47H72O18 |
| Molecular Weight | 925.06 g/mol |
| Purity | ≥95% |
| 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Amphotericin Standards
- Amphotericin B Impurity 23 (CAS CATO-C4X-184423)
- Amphotericin B (CAS 1397-89-3)
- Amphotericin B EP Impurity A (CAS 1405-32-9)
- Amphotericin B Impurity 16 (CAS CATO-C4X-184416)
- Amphotericin B Impurity 24 (CAS CATO-C4X-184424)
- Amphotericin B Impurity 7 (CAS CATO-C4X-18447)
- Amphotericin B Impurity 17 (CAS CATO-C4X-184417)
- Amphotericin B-13C6 (CAS 1397-89-3 (non-labelled))
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- 2-Amino-1-(3,4-dimethylphenyl)ethan-1-one (CAS 90874-59-2)
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Why CATO?
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