Girard reagent

noun Gi·rard reagent \jə̇ˈrärd-\
variants: or

Girard's reagent


Definition of Girard reagent

  1. :  any of several hydrazides that contain a quaternary ammonium radical and are useful especially in separating aldehydes or ketones (as some steroid hormones) from mixtures by forming soluble hydrazones: such as a :  a crystalline compound (CH3)3N(Cl)CH2CONHNH2 derived from trimethylamine or betaine —called also Girard T reagent b :  a crystalline compound C5H5N(Cl)CH2CONHNH2 derived from pyridine —called also Girard P reagent

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Origin and Etymology of girard reagent

after André Girard, 20th century French chemist

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to cast off or become cast off

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