methylone synthesis

This is very frustrating, Most Chinese suppliers sell such cathinone precursor powder in brown color, and other users tell me that it is white crystalline powder, because according to them the brown color is due to impurities, some real expert who knows can Answer my question? I don't know who...

Methylone (3,4-Methylenedioxymethcathinone, βk-MDMA) is a synthetic substance of the cathinone class that is often compared to MDMA. This product is very popular and causes a strong euphoria and empathy. It acts as a powerful aphrodisiac, the effect of which causes an unrestrained desire to have...