Industrial Synthesis

Amyris Biotechnologies Inc., which launched its IPO roadshow last week, got its start in therapeutics, but now is focused on using synthetic biology to produce fuels and chemicals such as surfactants, lubricants and synthetic rubber.

The biotech expects to price on or about Sept. 28. The company amended its S-1 last week to sell 5.3 million shares at $18-$20. A $19 price would raise $100.7 million and value the company at $768.2 million...