Analogues are drugs that have close structural resemblance and similar effects. For instance one could argue that naproxen (Aleve) is an analog of ibuprofen (Motrin/Advil). Most analogues are designed because true synthetic natural products are hard to make, or are not potent enough.
Definition of several. 1a : separate or distinct from one another federal union of the several statesb (1) : individually owned or controlled : exclusive a several fishery â compare common (2) : of or relating separately to each individual involved a several judgmentc : being separate and distinctive : respective specialists in their several fields.
Definition of Reciprocal. If the product of two numbers is 1, then the two numbers are said to be reciprocals of each other. In other words, a reciprocal is the multiplicative inverse of a number. The reciprocal of âaâ is. The real part of a complex number Z is denoted as Re (Z).