Clarithromycin, min. 95 %, EP Impurity L is an impurity reference substance for analytical chemistry and pharmaceutical development. Identified by CAS number 127253-05-8, it has the empirical formula C₃₈H₇₀N₂O₁₃ and a molar mass of 762,97 g/mol. Physical data include a flash point of 454,3 °C and a boiling point of 827,7 °C. Supplied at min. 95 %. Quality-control and research laboratories can use the material for standard preparation and system suitability checks where a well-characterised impurity marker is required. The product comes from manufacturer Carl ROTH in the biochemicals and impurities range and is intended for qualified laboratory use. Transparent CAS, formula, and purity information supports traceable documentation throughout analytical workflows. Key features Assay: ≥ 95 % Colour: reported Form: reported CAS number: 127253-05-8 Pack sizes: 1 mg, 2 mg, 5 mg, 10 mg, 25 mg Purity: min. 95 % Empirical formula: C₃₈H₇₀N₂O₁₃ Molar mass: 762,97 g/mol Storage temperature: -20 °C Technical Information Sheet: Safety Data Sheet: