Correction to: Synthesis, characterization and in vitro antimicrobial activity of novel fused pyrazolo[3,4-c]pyridazine, pyrazolo[3,4-d]pyrimidine, thieno[3,2-c] pyrazole and pyrazolo[3′,4′:4,5]thieno[2,3-d]pyrimidine derivatives

After the publication of this work [ 1 ] it was noticed that on page 3 of the article beginning in the paragraph—‘Hydrazide 14 is used as a key producer…’ the compound—“Not ethyl- N ′-5-amino-1,3-diphenyl-1 H -thieno[3,2- c ]pyrazole-6-carbonylformohydrazonate” should be deleted. Also on page 10 of the PDF beginning in paragraph—‘Synthesis of 5-amino-…’ the compound—“Not ethyl- N ′-5-amino-1,3-diphenyl-1 H -thieno[3,2- c ]pyrazole-6-carbonylformohydrazonate” should be deleted. We apologise for these errors.