Girard reagent


Gi·​rard reagent
variants or Girard's reagent
: 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 crystalline compound (CH3)3N(Cl)CH2CONHNH2 derived from trimethylamine or betaine

called also Girard T reagent

: a crystalline compound C5H5N(Cl)CH2CONHNH2 derived from pyridine

called also Girard P reagent

Word History


after André Girard, 20th century French chemist

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Dictionary Entries Near Girard reagent

Cite this Entry

“Girard reagent.” Dictionary, Merriam-Webster, Accessed 19 Jun. 2024.

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