Patent ID: 7820715

Claim:
An isolated crystal consisting essentially of (2R)-2-propyloctanoic acid and an amine, wherein the amine is (+)-dehydroabietylamine, (R)-(−)-2-phenylglycinol, (S)-(+)-2-phenylglycinol, (−)-cis-myrtanylamine, (R)-(+)-1-(p-tolyl)ethylamine, (R)-(+)-1-(1-naphthyl) ethylaamine, (S)-(−)-1-(1-naphthyl)ethylamine, L-tyrosinamide, (1S,2R)-(+)-2-amino-1,2-diphenylethanol, (1R,2S)-(−)-2-amino-1,2-diphenylethanol, (+)-cis-2-benzylaminocyclohexanemethanol, (−)-cis-2-benzylaminocyclohexanemethanol, (S)-(−)-2-amino-3-phenyl-1-propanol, (R)-(+)-2-amino-3-phenyl-1-propanol, (R)-(+)-1-(4-bromophenyl) ethylamine, (R)-(+)-1-phenylpropylamine, dibenzylamine, 1,2-diphenylethylaamine, benzhydrylamine, cyclohexylamine, dicyclohexylamine, cycloheptylamine, N-ethylcyclohexylamine, 2,2,6,6-tetramethyl-4-piperidinol, 2-(2-methoxyphenyl)ethylamine, 2-(3,4-dimethoxyphenyl)ethylamine, N-isopropylbenzylamine, or N-butylbenzylamine.