Are there alternatives to N-{3-[(2-{[4-(4-Methyl-1-piperazinyl)phenyl]amino}thieno[3,2-d]pyrimidin-4-yl)oxy]phenyl}acrylamide (CAS: 1353550-13-6) in synthesis?

There are several alternatives to N-{3-[(2-{[4-(4-Methyl-1-piperazinyl)phenyl]amino}thieno[3,2-d]pyrimidin-4-yl)oxy]phenyl}acrylamide (CAS: 1353550-13-6) in synthesis, including analogs such as other thieno[3,2-d]pyrimidine derivatives, isomers, and alternative reagents like substituted piperazines. These alternatives can offer different functionalities and may be more readily available or easier to handle in certain synthetic procedures.