claim: Tom Constanten is still a member of the Grateful Dead.
evidence: Innospec Specialty Chemicals , formerly known as Octel Corporation and Associated Octel Company , Ltd. , is a global specialty chemical company .. It comprises three business units  : Fuel Specialties , responsible for the development and supply of additives for fuels and which also includes the company 's activities in its Oilfield Chemicals division , Performance Chemicals , which focuses on products for the Personal Care industry and also provides products for the Polymers markets , and Octane Additives , which is the last remaining non-Chinese producer of tetraethyllead -LRB- TEL -RRB- used in the manufacture of motor gasoline in one remaining country and 100LL avgas throughout the world .. tetraethyllead. tetraethyllead. 100LL. 100LL. avgas. avgas. It is listed on the NASDAQ as IOSP .. NASDAQ. NASDAQ