I did the experiment Qualitive Analysis of an Unknown

I did the experiment Qualitive Analysis of an Unknown Organic compound in lab and i got unknown #11and the organic derivative for ketones was 4-methyl-2-pentanone and my professor want me to write a discussion to prove that was the product i got of course i took the melting point and everything and i got that product and i did the Semicarbazone and 2,4 DNP didnt work. Can you provide with more information to prove my professor that was the product i got because the i did the whole procedure for semicarbazone and then took the melting point but he doesnt want us to mention the procedures in discussion