what is the dose for penicillin g procaine for a dog

Try your local coke dealer. His coke is probably 60 to 80% procaine.

Procaine is not illegal. It is used as a topical anesthetic. If you're referring to its like cocaine, it won't have the same effect. This is because although procaine is derrived from cocaine, it is modified in a such a way to prevent abuse.

yes

Procaine and procaine monohydrochloride (Novocain) can be prepared from amino benzoic acid in two ways. The first way directly reacts 4-aminobenzoic acid ethyl ester with 2-diethylaminoethanol in sodium ethoxide. The second way reacts 4-nitrobenzoic acid with thionyl chloride. The resulting acid chloride is esterified with 2-diethylaminoethanol. Then the nitro group is reduced by hydrogenation over nickel catalyst.