Colistin B Sulfate Salt (~90%) CAS 1338055-88-1

Purity 97%+In StockPharmaceutical Standards
CAS No.1338055-88-1
Molecular FormulaC₅₂H₉₈N₁₆O₁₃
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Colistin B Sulfate Salt (~90%) CAS 1338055-88-1 chemical structure

Description

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.

Colistin B Sulfate Salt (~90%) (CAS 1338055-88-1) is a high-purity analytical reference standard with the molecular formula C₅₂H₉₈N₁₆O₁₃•x（H₂SO₄） and a molecular weight of 92.09 g/mol.

The molecular framework of Colistin B Sulfate Salt (~90%) (C₅₂H₉₈N₁₆O₁₃•x（H₂SO₄）) is characterized by a sulfone group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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.

Physical & Chemical Properties

Molecular FormulaC₅₂H₉₈N₁₆O₁₃ • x (H₂SO₄)
Molecular Weight92.09 g/mol
Purity97%+
StorageStore at 2-8°C, protect from light
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityLight-sensitive; avoid direct strong light
Degree of Unsaturation (DBE)1.5
CAS Registry Year (est.)1991
Nitrogen Atoms1
Sulfur Atoms1

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