thiopyrimidineWiktionary 原文英美构词拆解thiothio-前缀pyrimidinepyrimidine词干thio-(chemistry) containing sulfur, especially a compound in which oxygen has been replaced by this element词源说明From thio- + pyrimidine.释义名词noun1(organic chemistry) Any of several types of derivative of a pyrimidine containing a sulfur atom attached to the ring