myo-inositol + S-adenosyl-L-methionine <=> 1D-3-O-methyl-myo-inositol + S-adenosyl-L-homocysteine + H(+)
myo-inositol + s-adenosyl-l-methionine <=> 1d-3-o-methyl-myo-inositol + s-adenosyl-l-homocysteine + h(+)
myo-inositol + S-adenosyl-L-methionine <=> 1D-3-O-methyl-myo-inositol + S-adenosyl-L-homocysteine + H(+)
myo-inositol + s-adenosyl-l-methionine <=> 1d-3-o-methyl-myo-inositol + s-adenosyl-l-homocysteine + h(+)