Preparation of two ion-pair complexes of 3-dl-α-tocopherylcarbonyl-1-hexyl-pyridinium-[14C]-labeled cromolyn and 3-d-α-[5-methyl-3H] tocopherylcarbonyl-1-hexylpyridinium-cromolyn
Ion-pair complexes of 3-dl-α-tocopherylcarbonyl-1-hexyl pyridinium-[14C]-labeled cromolyn and 3-d-α-[5-methyl-3H] tocopherylcarbonyl-1-hexylpyridinium-cromolyn have been prepared with radiochemical yields of 56.0 and 65.7%, respectiv