Redirected from Heterocyclic
That is, unlike the carbon-only ring like in benzene and napthalene, there are other elements in the backbone, such as in pyrimidine and purine.
... to sign the Truce of Crepy[?]. Charles later signed a humiliating treaty with the Ottomans, to gain him some respite from the huge expenses of their war. In 1545 the ...