Publications by authors named "Abu M Rustum"

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Development of a Reversed-Phase HPLC Method by Applying a Scientific Approach and Strategies to Achieve Challenging Separation of Impurity Peaks in Typical Commercial Bulk Batches of Milbemycin Oxime Drug Substance.
Renuka P Rathnasekara, Milan K Dissanayake, Sarju Adhikari, Abu M Rustum

J AOAC Int· November 2025

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Comprehensive study of degradation pathways and formation mechanism of major degradation impurities of gamithromycin active ingredient by UHPLC-HRMS and NMR.
Nayanthara U Dharmaratne, Abu M Rustum

J Pharm Biomed Anal· October 2025

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Development and validation of a stability-indicating high performance liquid chromatography method based on a core-shell octadecyl column to determine Avermectin and its related substances in bulk Avermectin batches.
Shane N Berger, Abu M Rustum

J Pharm Biomed Anal· July 2025

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Development and Validation of a Single Stability-Indicating Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) Method for Identification and Assay of Eprinomectin in Two Different Commercial Injectable Drug Products for Cattle.
Nayanthara U Dharmaratne, Abu M Rustum

J AOAC Int· May 2025

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Identification of major degradation products of Clorsulon drug substance including its degradation pathways by high resolution mass spectrometry and NMR.
Daoli Zhao, Abu M Rustum

J Pharm Biomed Anal· August 2024

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Development of Relatively Simple Sample Pretreatment Strategies to Selectively Remove Chromatographic Interfering Peaks of Polysorbate 80 from Liquid Oral Finished Drug Product.
Sarju Adhikari, Shane N Berger, Abu M Rustum

J Chromatogr Sci· July 2024

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Development of a Reversed-Phase UPLC Method for Assay of Fipronil Including Determination of Its Related Substances in Bulk Batches of Fipronil Drug Substance.
Shane N Berger, Abu M Rustum

J AOAC Int· July 2024

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Simultaneous Determination of Fipronil, Permethrin, and Their Key Related Substances in a Topical Drug Product by a Single Stability-Indicating High-Performance Liquid Chromatography Method.
Renuka P Rathnasekara, Jingzhi Tian, Abu M Rustum

J AOAC Int· July 2024

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Determination of Clorsulon and its related substances in commercial bulk drug substance batches by a rapid ion-pair UPLC method.
Daoli Zhao, Abu M Rustum

J Pharm Biomed Anal· February 2024

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Simultaneous determination of praziquantel, fipronil, eprinomectin, (S)-methoprene, their key related substances and butylated hydroxytoluene (BHT) in a topical veterinary drug product by a single stability indicating high performance liquid chromatography method.
Renuka P Rathnasekara, Abu M Rustum

J Pharm Biomed Anal· January 2024

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Determination of Firocoxib and Its Related Substances in Bulk Drug Substance Batches of Firocoxib by a High-Speed Reversed-Phase HPLC Method With a Short Fused-Core Biphenyl Column.
Lin Wang, Abu M Rustum

J Chromatogr Sci· December 2023

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Simultaneous Determination of Esafoxolaner, Eprinomectin, Praziquantel, BHT and Their Related Substances in a Topical Finished Product by a Single Reversed-Phase High-Performance Liquid Chromatography Method.
Shilpi Chopra, Nilusha Padivitage, Daoli Zhao, Abu M Rustum

J Chromatogr Sci· November 2023

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Improved Stability-Indicating RP-UPLC Method for the Levamisole Hydrochloride Assay and Estimation of Its Related Compounds.
Sarju Adhikari, Abu M Rustum

J AOAC Int· September 2023

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Development of a Simple Extraction Procedure and an HPLC Method for the Determination of Delmopinol in a Challenging Rubbery Dental Chew.
Jinyou Zhang, Abu M Rustum, Sarju Adhikari

J AOAC Int· May 2023

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Development and Validation of a Stability-Indicating Reversed-Phase HPLC Method for Assay and Estimation of Related Substances of Ivermectin in an Oral Paste.
Nilusha Padivitage, Jingzhi Tian, Lin Wang, Jinyou Zhuang, Andrew McAdoo, Abu M Rustum

J Chromatogr Sci· February 2023

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Comprehensive study on degradation profile of firocoxib and structural elucidation of its key degradation products.
Sarju Adhikari, Jingzhi Tian, Abu M Rustum

J Pharm Biomed Anal· February 2023

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Development and Validation of a Stability-Indicating Reversed-Phase Ultra High Pressure Liquid Chromatography Method for Assay of Delmopinol Hydrochloride and Estimation of Its Related Substances in Commercial Bulk Batches.
Jinyou Zhuang, Abu M Rustum

J Chromatogr Sci· November 2022

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Development and Validation of a Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) Method for Identification, Assay and Estimation of Related Substances of Ivermectin in Bulk Drug Batches of Ivermectin Drug Substance.
Daoli Zhao, Rasangi M Wimalasinghe, Lin Wang, Abu M Rustum

J Chromatogr Sci· September 2022

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Structural elucidation of major degradation products of milbemycin oxime drug substance using LC-MS and NMR.
Sarju Adhikari, Abu M Rustum

J Pharm Biomed Anal· August 2022

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Identification and characterization of major degradation products of Eprinomectin drug substance including degradation pathways using LC-HRMS and NMR.
Sarju Adhikari, Abu M Rustum

J Pharm Biomed Anal· June 2022

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A comprehensive study to identify and characterize major degradation products of Ivermectin drug substance including its degradation pathways using LC-HRMS and NMR.
Sarju Adhikari, Abu M Rustum

J Pharm Biomed Anal· May 2022

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Simultaneous determination of ivermectin, clorsulon and their related substances in an injectable finished product by a stability-indicating RP-HPLC method.
Nilusha Padivitage, Sarju Adhikari, Abu M Rustum

J Pharm Biomed Anal· February 2022

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Assay of afoxolaner and determination of its related substances in commercial bulk batches of afoxolaner by reversed-phase HPLC method based on a short octadecyl column.
Nilusha Padivitage, Sarju Adhikari, Abu M Rustum

J Chromatogr B Analyt Technol Biomed Life Sci· November 2021

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Development and Validation of a Stability-Indicating Reversed-Phase High-Performance Liquid Chromatography Method for Assay of Doramectin and Estimation of its Related Substances in Commercial Batches of Doramectin Drug Substance.
Lin Wang, Rasangi Wimalasinghe, Nilusha Padivitage, Abu M Rustum

J AOAC Int· September 2021

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A compatibility study of a secondary amine active pharmaceutical ingredient with starch: identification of a novel degradant formed between desloratadine and a starch impurity using LC-MS(n) and NMR spectroscopy.
Xin Yu, Alexei V Buevich, Min Li, Xin Wang, Abu M Rustum

J Pharm Sci· February 2013

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