Pentose Phosphate Pathway
The pentose phosphate pathway is a process used to generate NADPH and pentoses (5-carbon sugars). This pathway is composed of two distinct phases. The first is the oxidative phase, in which NADPH is generated, and the second is the non-oxidative synthesis of 5-carbon sugars. This pathway is an alternative to glycolysis. Although it does involve oxidation of glucose, its primary role is anabolic rather than catabolic.
Chemical equation
Rate equation
Constant flux is considered for this pathway in this model where the flux vlaue is 
