The Drug, Chemical & Associated Technologies Association’s annual dinner, an event that’s been called the largest black-tie gathering in New York City, was held last week for the 90th time, at the Waldorf Astoria New York hotel . Suppliers of chemistry and other services to the pharmaceutical industry were there in force for meetings with customers and to announce investments in new capabilities and manufacturing capacity. The Swiss firm Dottikon Exclusive Synthesis said it would . . .