(R)-(Phenylacetyl)ammonium (1S)-7,7-dimethyl-2-oxobicyclo(2.2.1)heptane-1-methanesulphonate 36775-31-2 52162-76-2 Benzeneacetic acid, alpha-amino-, (R)-, (1S)-7,7-dimethyl-2-oxobicyclo(2.2.1)heptane-1-methanesulfonate EINECS 253-201-2