| guanidine | <biochemistry> This compound is a by-product of protein metabolism and is found inurine, the hydrochloride version is used to denature and dissolve proteins. (09 Oct 1997) |
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| guanidines | A family of iminourea derivatives. The parent compound has been isolated from mushrooms, corn germ, rice hulls, mussels, earthworms, and turnip juice. Derivatives may have antiviral and antifungal properties. (12 Dec 1998) |