Tetracyclines
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Medchemexpress LLC 4-epi-oxytetracycline | 14206-58-7 | ≥95.0% | 460.43 | C22H24N2O9 | 10MG
4-Epioxytetracycline is a degradation product and metabolite of the antibiotic oxytetracycline supplied as an analytical standard for environmental and pharmaceutical analysis. It is used for qualitative and quantitative assays, method development, and trace-level monitoring by chromatographic and mass-spectrometric techniques.
- Analytical standard for 4-epioxytetracycline, a metabolite of oxytetracycline.
- CAS number 14206-58-7.
- Molecular formula C22H24N2O9; molecular weight 460.43 g/mol.
- Purity ≥95.0% (batch-specific; see certificate of analysis).
- Supplied as a solid/powder; common pack sizes include 50 mg, 100 mg, and 250 mg (other sizes may be available).
- Intended applications: HPLC, GC, MS, quantitative and qualitative method development.
- Refer to the certificate of analysis or product documentation for storage and batch-specific specifications.
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Medchemexpress LLC Chlortetracycline-13C,d3 hydrochloride | 519.35 g/mol | C21 13CH21D3Cl2N2O8 | 500 UG
Chlortetracycline-13C,d3 hydrochloride is the 13C- and deuterium-labeled form of chlortetracycline hydrochloride supplied as an analytical reference standard for use in mass spectrometry, chromatographic method development, and tracer studies. It is provided in a microgram pack suitable for analytical laboratories.
- Isotope-labeled standard for mass spectrometry and tracer studies.
- Labeled with 13C and d3 for clear mass-shift differentiation.
- Supplied as the hydrochloride salt for improved stability.
- Molecular weight 519.35 g/mol.
- Packaged in a 500 UG quantity suitable for analytical use.