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US 6,645,716 B2Granted
Methods for detection of chloral hydrate in dichloroacetic acid
AssigneeIsis Pharmaceuticals, Inc.
InventorsPatrick Wheeler, Daniel C. Capaldi
Life of this patent
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Abstract
Methods for detecting chloral hydrate in dichloroacetic acid are described.
Claims27
An analytical method comprising determining whether or not a nuclear magnetic resonance spectrum taken from a sample of dichloroacetic acid includes a a nuclear magnetic resonance peak associated with a CH proton of chloral hydrate.
A solvent that comprises dichloroacetic acid in an amount greater than about 50% by weight and is substantially free of chloral hydrate.
Dependencies are inferred from the claim text.