{"title":"Simultaneous Analysis of Cyproconazole and Tebuconazole in Suspension Concentrate Formulation by Reverse-Phase High-Performance Liquid Chromatography.","authors":"Sahadev Katam, Prasad Munipalli, Bhavani Balram, Vasu Govardhana Reddy Peddiahgari","doi":"10.1093/chromsci/bmaf047","DOIUrl":null,"url":null,"abstract":"<p><p>A novel and validated reverse-phase high-performance liquid chromatography (RP-HPLC) approach was established for the concurrent measurement of cyproconazole (CYP) isomers and tebuconazole (TBZ) in suspension concentrate (SC) agrochemical formulations. The approach employed a C18 column with a gradient elution of 0.1% formic acid in water and methanol, attaining baseline resolution of CYP isomer-1, isomer-2 and TBZ without requiring chiral columns or sample pretreatment. Linearity was confirmed within the range of 80-120% of the target concentration, with a R2 value of 0.999. Accuracy varied from 101.2% to 102.8%, with a %RSD of less than 0.8%. LC-MS analysis verified analyte identity through distinctive ion transitions (CYP: m/z 292, TBZ: m/z 308). This is the initial method for isomer-specific detection of CYP using RP-HPLC within a formulation matrix. The methodology is straightforward, resilient and appropriate for standard quality assurance and regulatory adherence in agrochemical manufacturing.</p>","PeriodicalId":15430,"journal":{"name":"Journal of chromatographic science","volume":"63 8","pages":""},"PeriodicalIF":1.3000,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of chromatographic science","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1093/chromsci/bmaf047","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"BIOCHEMICAL RESEARCH METHODS","Score":null,"Total":0}
引用次数: 0
Abstract
A novel and validated reverse-phase high-performance liquid chromatography (RP-HPLC) approach was established for the concurrent measurement of cyproconazole (CYP) isomers and tebuconazole (TBZ) in suspension concentrate (SC) agrochemical formulations. The approach employed a C18 column with a gradient elution of 0.1% formic acid in water and methanol, attaining baseline resolution of CYP isomer-1, isomer-2 and TBZ without requiring chiral columns or sample pretreatment. Linearity was confirmed within the range of 80-120% of the target concentration, with a R2 value of 0.999. Accuracy varied from 101.2% to 102.8%, with a %RSD of less than 0.8%. LC-MS analysis verified analyte identity through distinctive ion transitions (CYP: m/z 292, TBZ: m/z 308). This is the initial method for isomer-specific detection of CYP using RP-HPLC within a formulation matrix. The methodology is straightforward, resilient and appropriate for standard quality assurance and regulatory adherence in agrochemical manufacturing.
期刊介绍:
The Journal of Chromatographic Science is devoted to the dissemination of information concerning all methods of chromatographic analysis. The standard manuscript is a description of recent original research that covers any or all phases of a specific separation problem, principle, or method. Manuscripts which have a high degree of novelty and fundamental significance to the field of separation science are particularly encouraged. It is expected the authors will clearly state in the Introduction how their method compares in some markedly new and improved way to previous published related methods. Analytical performance characteristics of new methods including sensitivity, tested limits of detection or quantification, accuracy, precision, and specificity should be provided. Manuscripts which describe a straightforward extension of a known analytical method or an application to a previously analyzed and/or uncomplicated sample matrix will not normally be reviewed favorably. Manuscripts in which mass spectrometry is the dominant analytical method and chromatography is of marked secondary importance may be declined.