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Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The references discussed above accordingly teach that where the guanidine is other than guanidine itself, the hydrocarbon substituents should be such as to provide a pKa of preferably greater than 13, and at least greater than 12.
http://www.w3.org/ns/prov#wasQuotedFrom	sumobrain.com