preparation of iron ( iii ) -deuteroporphyrin 6 ( 7 ) -methyl ester , 7 ( 6 ) - ( histidine methyl ester ) by coupling histidine methyl ester to deuterohemin has been performed using the mixed carboxylic/carbonic-acid-anhydride method .
C0014898
ester
C0007066
carboxylic