The model contains one compartment called C. There are two species called S1 and S2 and three parameters called k1, k2 and p1. The model contains one reaction defined as:

Reaction Rate
S1 → (4 * p1)S2 C · k2 · S

The model contains one initialAssignment:

Variable Formula
S1 k1 · S2

Note: SBML's InitialAssignment construct override any declared initial values. In this case the initial value declared for species S1 is consistent with the value returned by the InitialAssignment.

The initial conditions are as follows:

Value Units
Initial amount of S1 1.125 mole
Initial amount of S2 1.5 mole
Value of parameter k1 0.75 dimensionless
Value of parameter k2 5 second-1
Value of parameter p1 0.5 dimensionless
Volume of compartment C 1 litre

The species values are given as amounts of substance to make it easier to use the model in a discrete stochastic simulator, but (as per usual SBML principles) their symbols represent their values in concentration units where they appear in expressions.

Note: The test data for this model was generated from an analytical solution of the system of equations.