Changes
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==Structure-6 (19(doc2))==
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[[Image:b3b31.jpg|thumb|center|500px]]
R<sub>1</sub>-R<sub>2</sub>= H, -C<sub>2</sub>H<sub>5 </sub>which matches with R<sup>1</sup>(alkyl) at 1<sup>st</sup> position of pyrazole of generic structure
