Controlled dangerous substances; adding certain substances to Schedules I and IV; effective date.

The document header was updated to reflect the 'Floor Version' status and removed the 'Committee Substitute' label, indicating the bill has passed the committee stage and is ready for floor debate.

Page numbering and internal reference markers (such as 'Req. No.' and 'BOLD FACE' notes) were removed or reorganized to match the standard format for bills presented on the House floor.

Updated the document header to reflect it is a 'Committee Substitute' rather than 'Engrossed', indicating legislative progress.

Corrected punctuation and spacing in the list of hallucinogenic substances, such as adding 'and' before 'salts' and standardizing the formatting of chemical names like '4 Bromo-2, 5-dimethoxyamphetamine'.

Removed a line item for '2,5-dimethoxy-4-propylthio-phenethylamine' from the list of controlled substances.

Adjusted the formatting of the page header from 'ENGR. H. B. NO. 3767' to 'Req. No. 3852'.

Added 34 new synthetic opioid substances to Schedule I, including specific variants like Isotonitazene, Norlevorphanol, and multiple new fentanyl analogs such as Butyrl fentanyl and Cyclopropyl fentanyl.

Added 22 new hallucinogenic substances to Schedule I, including additional 2,5-dimethoxy-4-substituted phenethylamines (e.g., nitro, bromo, chloro, iodo, ethylthio variants) and new PCP analogs like 2-Thienyl Analog of Phencyclidine.

Reformatted the bill header to reflect that it is an Engrossed House Bill with Senate amendments, rather than an Engrossed Senate Amendment.

The title and enacting clause were updated to identify the document as an 'Engrossed Senate Amendment' rather than the original 'Enrolled House Bill'.

Added 63 specific substances to the list of controlled dangerous substances, including new fentanyl analogs like Acetyl fentanyl and Crotonyl fentanyl, as well as synthetic opioids such as Isotonitazene and N-desethyl isotonitazene.

Added 47 new hallucinogenic substances to Schedule I, including various methoxy-amphetamines, tryptamines, and analogs of PCP.

Added specific fentanyl analogs to the list of controlled substances, closing potential legal gaps regarding synthetic variations of fentanyl.

Refined the legal definition of hallucinogenic substances to explicitly include salts and isomers, ensuring that chemically modified versions of these drugs are also covered.