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Current status and considerations on the control of ethylene glycol, diethylene glycol, and triethylene glycol impurities in pharmaceutical excipients
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Jue WANG1, Xiao-feng WANG1, Xue-yan ZHANG1, Xia ZHAO1, Bao-ming NING1, Xiao LING3, Jia-sheng TU4, Rui YANG1, Jun ZHANG2, *, Hui-min SUN1, *
Chinese Journal of New Drugs | 2026, 35(7) : 710 - 721
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Chinese Journal of New Drugs | 2026, 35(7): 710-721
Current status and considerations on the control of ethylene glycol, diethylene glycol, and triethylene glycol impurities in pharmaceutical excipients
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Jue WANG1, Xiao-feng WANG1, Xue-yan ZHANG1, Xia ZHAO1, Bao-ming NING1, Xiao LING3, Jia-sheng TU4, Rui YANG1, Jun ZHANG2, *, Hui-min SUN1, *
Affiliations
  • 1Key Laboratory of Quality Research and Evaluation of Pharmaceutical Excipients, National Institutes for Food and Drug Control, Beijing 100050, China
  • 2National Medical Products Administration Pharmacopoeia Commission, Beijing 100061, China
  • 3USP Standards R&D Technical Service (Shanghai) Co., Ltd., Shanghai 200131, China
  • 4China Pharmaceutical University, Nanjing 210000, China
Published: 2026-04-15 doi: 10.20251/j.cnki.1003-3734.2026.07.006
Outline
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This article provides an in-depth exploration of the current quality control status and regulatory developments concerning ethylene glycol, diethylene glycol, and triethylene glycol impurities in pharmaceutical excipients. Since the 1940s, global public safety incidents caused by the misuse or contamination of ethylene glycol or diethylene glycol have occurred frequently, drawing significant attention from regulatory authorities worldwide. Regulatory agencies have introduced corresponding measures to prevent the recurrence of such incidents. The article details the sources, uses, safety profiles of ethylene glycol, diethylene glycol, and triethylene glycol, as well as their respective pharmacopoeial standards and the current regulatory landscape. Testing for the presence of these three impurities in representative excipient products has revealed potential risks posed by ethylene glycol, diethylene glycol, and triethylene glycol in pharmaceutical excipients. Based on these findings, the article proposes recommendations for strengthening detection standards, enhancing regulatory oversight, and improving safety assessments to ensure the safety of pharmaceutical excipients and prevent similar pharmaceutical disasters. The results indicate that establishing rigorous detection methods and standards for these three impurities is crucial for ensuring the overall quality and safety of pharmaceuticals, especially in the quality control of excipients, which should be given equal importance as that of active pharmaceutical ingredients.

pharmaceutical excipients  /  ethylene glycol  /  diethylene glycol  /  triethylene glycol  /  impurity  /  quality control
王珏, 王晓锋, 张雪妍, 赵霞, 宁保明, 凌霄, 涂家生, 杨锐, 张军, 孙会敏. 药用辅料中乙二醇、二甘醇和三甘醇杂质控制现状和思考. 中国新药杂志, 2026 , 35 (7) : 710 -721 . DOI: 10.20251/j.cnki.1003-3734.2026.07.006
Jue WANG, Xiao-feng WANG, Xue-yan ZHANG, Xia ZHAO, Bao-ming NING, Xiao LING, Jia-sheng TU, Rui YANG, Jun ZHANG, Hui-min SUN. Current status and considerations on the control of ethylene glycol, diethylene glycol, and triethylene glycol impurities in pharmaceutical excipients[J]. Chinese Journal of New Drugs, 2026 , 35 (7) : 710 -721 . DOI: 10.20251/j.cnki.1003-3734.2026.07.006
Year 2026 volume 35 Issue 7
27
5
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Article Info
doi: 10.20251/j.cnki.1003-3734.2026.07.006
  • Online Date:2026-10-26
  • Published:2026-04-15
Article Data
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History
  • Accepted:2025-09-08
Affiliations
    1Key Laboratory of Quality Research and Evaluation of Pharmaceutical Excipients, National Institutes for Food and Drug Control, Beijing 100050, China
    2National Medical Products Administration Pharmacopoeia Commission, Beijing 100061, China
    3USP Standards R&D Technical Service (Shanghai) Co., Ltd., Shanghai 200131, China
    4China Pharmaceutical University, Nanjing 210000, China
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表12种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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