and escape control. In their view, the only efficient and time-saving solution, therefore, was to schedule all fentanyl analogues. That could be done by adopting a generic definition of fentanyl that would be wide enough to - 14 - cover all possible compounds that might develop in the future. Since all fentanyl analogues were derived from fentanyl, which was itself listed as a drug under Schedule I, their scheduling would satisfy the criterion established in article 3, paragraph 3 (iii), of the Single Convention. 47. Other representatives had reservations about the technical feasibility of the global scheduling of a whole group of analogues. They were concerned that there might be legal obstacles to such an approach under the Single Convention. 48. One representative observed that such a global approach had already been adopted for ecgonine, which was included in Schedule I of the Single Convention, together with its esters and derivatives which were convertible to ecgonine and cocaine. 49. The observer for WHO indicated that the next Expert Committee on Drug Dependence should receive a report from the WHO secretariat with a plan on how WHO would proceed with the work on recommendations concerning all analogues of fentanyl. 50. The Commission, by a vote of 36 in favour, none against and 2 abstentions, decided to include alpha-methylthio fentanvl . para-fluorofentanvl . beta-hvdroxv fentanvl, beta-hvdroxv-3-methvl fentanvl . thiofentanvl and 3-methvlthio fentanvl in Schedules I and IV of the Single Convention. For the text of the formal decisions drafted by the Secretariat at the request of the Commission to reflect the results of the vote on the six substances, see chapter X, section B, decisions 1 (S-XI)-6 (S-XI). Convention on Psychotropic Substances. 1971 Dronabinol 51. Document E/CN.7/1990/4 also contained a notification from the Government of the United States recommending that delta-9-tetrahydrocannabinol 
**Analysis**
The text appears to be discussing the regulation of drugs, specifically fentanyl analogues, and the scheduling of substances under the Single Convention on Psychotropic Substances. The language used is technical and refers to specific chemical compounds and international agreements, suggesting a focus on health and drug control.

**Category**
Health