| 单词 | Gerard reagent |
| 释义 | Gerard reagent [jǝ`rärd rē´ā·jǝnt] CHEMISTRY The quaternary ammonium compounds, acethydrazide-pyridinium chloride and trimethylacethydrazide ammonium chloride; used to separate aldehydes and ketones from oily or fatty natural materials and to extract sex hormones from urine. |
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