X0202 4 2006-12-14 0 0000749290 SYNTHETECH INC NZYM 0001188015 AHRENS PAUL C 1290 INDUSTRIAL WAY ALBANY OR 97322 1 0 0 0 Common Stock 2006-12-14 4 S 0 5000 0.6 D 1006791 D Common Stock 2006-12-15 4 S 0 9500 0.58 D 997291 D Common Stock 2006-12-15 4 S 0 1700 0.57 D 995591 D Common Stock 2006-12-15 4 S 0 14750 0.56 D 980841 D /s/ Gary Weber as Attorney-in-Fact for Paul C. Ahrens 2006-12-15