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Acylation reagents for GC - Anhydrides

Macherey-Nagel GmbH & Co. KG (15131)

Acylation reagents for GC - Anhydrides
For improved volatility, better thermal stability or low limit of detection in gas chromatography prerequisite: quantitative, rapid and reproducible formation of only on derivative halogen atoms introduced by derivatisation (e.g. trifluoroacetates) allow specific detection (ECD) with the advantage of high sensitivity elution order and fragmentation patterns in MS can be influenced by a specific derivatisation.
Reagents for silylation - alkylation (methylation) - acylation are available.
Acylation with fluorinated acid anhydrides can be used for alcohols, phenols, carboxylic acids, amines, amino acids and steroids forming volatile, stable derivatives suited for FID as well as for ECD detection.

by-products of acylation with anhydrides: corresponding acids
excess reagent and the acid formed have to be removed

Heptafluorobutyric acid anhydride (HFBA)
m.w. 410.06, Bp 106 - 107°C (760mm Hg),
C3F7 - CO - O - CO - C3F7
density d20°/4° = 1.665

PN	Manuf. PN	Supplier	Capacity~ml	Description	PK	General	Price
4001480	701110.201	Macherey-Nagel GmbH & Co. KG	1	HFBA	20	Dangerous substance	Inquire
4001479	701110.110	Macherey-Nagel GmbH & Co. KG	10	HFBA	1		202.94 EU
4001481	701110.510	Macherey-Nagel GmbH & Co. KG	10	HFBA	5		823.53 EU