2-Ethyl-3-oxobutyryl Coenzyme A is an derivative of Coenzyme A (C636400), a cofactor in enzymatic acetyl transfer reactions.2-Ethyl Crotonyl Coenzyme A have been used to study Rathke’s pouch homeobox (RPX), a novel antierior-restricted homeobox gene progressively activated in prechordal plate, anterior neural plate and Rathke’s pouch of the mouse embryo.