Denisov N. S. RussiaSaratovSaratov State Medical University, 112, Bolshaya Kazachya Str., Saratov, 410010, Russiaдоцент, кандидат химических наукkatrin783@mail.ru Author's articles To the Question the Choice of a Derivatizing Agent for the Transfer of Methylphosphonic Acid and its O-alkils Ethers to Chromatographic Derivatives The Peculiarities of Synthesis of Acid Esters of Methylphosphonic Acid Mass Fraction Evaluation of the Basic Substance in Dialkyl Methylphosphonate Samples by Potentiometric Titration