氯四环素 盐酸盐 Chlortetracycline hydrochloride 别名: 金霉素 盐酸盐 分子量 515.34 assay ≥75% (HPLC) mp 210-215 °C (dec.)(lit.) storage temp. −20°C Application Cell-permeable fluorescent probe for Ca2+ for measuring calcium flux in endoplasmic reticulum and other intracellular stores in situ. Biochem/physiol Actions Chlortetracycline is an antibiotic produced by some strains of Streptomyces aureofaciens.Mode of Action: Inhibits protein synthesis (elongation) by preventing binding of aminoacyl-tRNA to the 30S subunit. Antimicrobial spectrum: Gram-positive. Less active against Gram-negative bacterial than tetracycline.Mode of Resistance: Loss of cell wall permeability.