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1. An alkaloid, C9H11NO, that is present in fresh khat leaves and is a central nervous system stimulant. It is a controlled substance in the United States.
2. Any of several synthetic derivatives of this alkaloid that are used as drugs for their stimulating properties.

[New Latin Catha, khat genus (from Arabic qāt, khat; see khat) + -in(e) + -one.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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He was later released after it was found that the pills and tablets contained MDMA-methylene homolog and synthetic cathinone, which are not listed as illegal substances under Republic Act 9165, the comprehensive anti-illegal drug law, authorities said.
Khat contains the alkaloids cathinone, norephedrin and cathine.
2 pled guilty to manufacture/delivery of 50 to 200 grams of alpha-P, synthetic cathinone, a July 9, 2017 offense which happened in Pana.
This is a stimulant known as cathinone and is derived from the plant khat, which is found in parts of Africa and the Arabian Peninsula.
The ecstasy tablets, valued at PS256,000, were among a stash that also contained 84.8g of crystal MDMA, 229g of cocaine, cathinone derivatives (like amphetamine) worth PS774,135 and psychoactive drug mexedrone worth PS30,000.
Chen Po-chuan, head of an inspection brigade under the criminal police division at the Aviation Police Bureau, said nine packets, with a total weight of just over 9 kilograms, were found and the contents were later identified as synthetic cathinone, which was banned in Taiwan on July 11.
The proclamation, obtained by The Post on Thursday said that khat is a plant that contains cathinone and cathine, which are considered drugs.
In an earlier report, the NBI officials said one of the victims tested positive for MDMA (methylene homolog and methylenedioxy cathinone), a type of ecstasy combined with other chemicals unfit for human consumption.
Alpha-PVP, α-Pyrrolidinopentiophenone, is a synthetic stimulant of the cathinone class developed in the 1960s that has been sold as a designer drug.
Bath salts are a group of central nervous system stimulants that consists mainly of synthetic cathinone derivatives [1].
The main psychoactive agent in khat is cathinone (S(-)-[alpha]-aminopropiophenone), which is metabolized to the less potent chemical R,S-(-)-norephedrine.