For synthesizing organosilicon intermediates, such as the cephalosporin antibiotics: piperacillin, cefoperazone, etc.
Answers:
Pfizer is the most profitable with net income of over US$11 billion in 2004. Also spends most on research and development ($7.7 b)
Pfizer and Bristol Meyer Squibb in USA
cipla,ranbaxy,hindustan Antibiotics,pune
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