[Scott104]

I have a white solid, soluble in water at room temperature and insoluble in ether even at high temperatures, with melting point measured at 82~84ºC (suffers decomposition). Said solid is recrystallized in ethanol and dried with a high vacuum pump for complete removal of water, the resulting crystals had a melting point of 145~147ºC (also decomposed).

The Lasagna extract made by fusing it with Sodium showed negative reactions to Nitrogen, Sulphur and halogens.

It's water solution has neutral pH and reacts positively to Benedict's reagent, forming a deep red precipitate.

It's derivative with phenylhydrazone has a melting point of 208ºC.

What is this solid?

[Babcock_Hall]

It is a Forum Rule that you must provide your answer before we can help you.  What is a lasagna extract?

[mjc123]

Is that the Lassaigne test? At university we used to call it the "Lasagna test" as a joke.

[Babcock_Hall]

Do you mean that its product with phenylhydrazine is a phenylhydrazone with a melting point of 208 °C?  Which functional groups react with phenylhydrazine?