Erythromycin impurity 75 CAS 15797-36-1
| CAS No. | 15797-36-1 |
| Molecular Formula | C21H38O6 |
| Molecular Weight | 386.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 386.52 g/mol gives Erythromycin impurity 75 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Erythromycin impurity 75 (CAS 15797-36-1, C21H38O6) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Erythromycin impurity 75 (C21H38O6) contains a carboxylic acid group, a hydroxyl group, an ether linkage. 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.
As a certified reference material (CRM), Erythromycin impurity 75 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.
Physical & Chemical Properties
| Molecular Formula | C21H38O6 |
| Molecular Weight | 386.52 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
Related Erythromycin Standards
- Erythromycin EP Impurity N (CAS 3225-82-9)
- Erythromycin EP Impurity I（Erythralosamine） (CAS 546-57-6)
- Erythromycin impurity 76 (CAS 34698-88-9)
- Erythromycin Impurity 38 (CAS CATO-C4X-100138)
- Erythromycin Impurity 26 (CAS 13483-18-6)
- Erythromycin impurity 56 (CAS CATO-C4X-100156)
- Erythromycin Impurity 40 (CAS CATO-C4X-100140)
- Erythromycin Impurity 41 (CAS 33275-72-8)
Recommended Standards
- Ubiquinone Q3 (CAS 1173-76-8)
- Megestrol Acetate EP Impurity J (CAS 14994-27-5)
- CAS 52190-21-3 (CAS 52190-21-3)
- Medroxyprogesterone Acetate EP Impurity D (CAS 2242-65-1)
- Nabumetone Impurity 13 (CAS CATO-C4X-284813)
- Acetaminophen Impurity 22 (CAS CATO-C4X-121122)
- Landiolol Impurity 63 (CAS CATO-C4X-263163)
- 5-(Bromomethyl)-2-ethoxy-1,3-difluorobenzene (CAS 1017779-38-2)
- 8-Fluorochroman-4-amine (CAS 791043-28-2)
- 2-mercapto-3-(2-mercaptoethyl)quinazolin-4(3H)-one (CAS 855715-15-0)
- 4-Cyclopropoxy-3-ethylbenzonitrile (CAS 1243482-68-9)
- 1-(1-(4-Amino-1,2,5-oxadiazol-3-yl)-5-methyl-1H-1,2,3-triazol-4-yl)ethan-1-one (CAS 313952-93-1)
- 1-(1-Methyl-1H-imidazol-5-yl)cyclopropan-1-amine hydrochloride (CAS 2149589-57-9)
- Semaglutide impurity 211 (CAS CATO-C4X-2226211)
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