Chinese Journal of Pharmacovigilance ›› 2024, Vol. 21 ›› Issue (2): 147-151.
DOI: 10.19803/j.1672-8629.20230434

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Determination of particle size distribution of chiglitazar sodium by laser diffraction method

GUO Ningzi1, LIU Li1, YUE Ruiqi2, FENG Huiqing3, YANG Huaxin1, WEI Ningyi1,*, CHEN Hua1#   

  1. 1National Institutes for Food and Drug Control, Beijing 102629, China;
    2Chinese Pharmacopoeia Commission, Beijing 100061, China;
    3Malvernpanalytical Co., Ltd., Beijing 100040, China
  • Received:2023-07-21 Online:2024-02-15 Published:2024-02-06

Abstract: Objective To establish a laser diffraction method for determination of the particle size distribution of chiglitazar sodium so as to provide reference for the development and quality control of methods for determination of drug particle size. Methods The Malvern Mastersizer 3000 laser particle size analyzer with an AEROS dry sampler was used to establish a laser diffraction method for determination of the particle size distribution of chiglitazar sodium. As for the AEROS injector, the conditions of determination were as follows: the duration of background measurement was 7 s, the duration of sample measurement was 7 s, obscuration ranged from 0.5% to 5%, the sample dispersion pressure was 0.4 MPa, the injection speed was 60%, high energy venturis were used, and the hopper gap was 2.5 mm. Results The particle size distribution value of the three batches of samples ranged from 1.02 to 1.17 μm in d(0.1), 5.94 to 6.69 μm in d(0.5), and 20.70 to 22.40 μm in d(0.9). The RSD of the above values was below 1%. Conclusion A particle size determination method has been established for chiglitazar sodium, which can provide reference for the development of dry particle size determination methods for other hygroscopic drugs.

Key words: laser diffraction method, chiglitazar sodium, particle size distribution, hygroscopic drugs, dry measurement

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