Girard’s Reagent P

• CAT Number: R052303
• CAS Number: 1126-58-5
• Molecular Formula: C7H10ClN3O
• Molecular Weight: 187.63
• Purity: ≥95%
• Synonyms: 1-(Carboxymethyl)pyridinium Chloride Hydrazide; 1-(2-Hydrazino-2-oxoethyl)pyridinium Chloride; Girard-P Reagent; Girard’s P Reagent; Pyridinioacetohydrazide Chloride
• Storage: Desiccate at RT
• IUPAC Name: 2-pyridin-1-ium-1-ylacetohydrazide;chloride
• InChI: InChI=1S/C7H9N3O.ClH/c8-9-7(11)6-10-4-2-1-3-5-10;/h1-5H,6,8H2;1H
• InChIKey: NDXLVXDHVHWYFR-UHFFFAOYSA-N
• SMILES: C1=CC=[N+](C=C1)CC(=O)NN.[Cl-]

Girard’s Reagent P(Cat No.: R052303), also known as Girard P reagent or 1-(Carboxymethyl)pyridinium chloride hydrazide, is a water-soluble compound widely used in organic and analytical chemistry. It contains a pyridinium group, a hydrazide functional group, and a carboxymethyl side chain. This reagent selectively reacts with carbonyl compounds, particularly ketones and aldehydes, to form hydrazone derivatives. It is commonly employed in the isolation, identification, and purification of steroids, bile acids, and other carbonyl-containing molecules due to its high reactivity and aqueous solubility.