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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Angel dust is -
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The correct answer is  Phencyclidine (PCP), a phenylcyclohexylamine compound, is easily synthesised from piperazine, cyclohexanone, and potassium cyanide. It is commonly referred to by addicts as "angel dust" or "PCP" Ref: K.S.Narayan Reddy's Synopsis of Forensic Medicine and Toxicology, 29th edition, Chapter 30, page-332.