Federal controlled substance schedule (I-V) by drug, with DEA code number

Every substance named in the federal drug schedules at 21 CFR 1308.11-1308.15, with the schedule it sits in, its DEA Controlled Substances Code Number, the class it is listed under, and the exact paragraph of the regulation the entry comes from. One record is one substance at one paragraph, quoted from the regulation itself. A drug can sit in more than one schedule at the same time, and the difference is usually the preparation rather than the drug: codeine is Schedule II on its own, Schedule III in a limited-strength compound, and Schedule V at not more than 200 milligrams per 100 millilitres. Each of those is a separate record, so the answer is not silently collapsed into whichever listing came first. Marijuana is split the same way: Schedule I as a plant, and Schedule III in an FDA-approved product or when subject to a state medical marijuana licence. Substances placed in Schedule I on an emergency temporary basis carry the date that placement runs until. Two limits are worth knowing: the anabolic steroids in 1308.13(f) share a single code number for the whole class, so individual steroids are published with no code rather than an invented one, and a few entries print XXXX where a code would go. Answers what schedule a given drug is in, whether marijuana is Schedule I or III, what the DEA code number for a substance is, and when a temporary listing expires.

The data

Showing the first 400 of 591 records. Every record has its own page, with its source and the quoted line that states it; these list the rest.

• Records 1–4001-(1-(1-(4-bromophenyl)ethyl)piperidin-4-yl)-5,6-dichloro-1,3-dihydro-2H-benzo[d]imidazol-2-one, its isomers, esters, ethers, salts, and salts of isomers, esters, and ethers (Other names: 5,6-dichloro brorphine; SR-14968) … Metodesnitazene (N,N-diethyl-2-(2-(4-methoxybenzyl)-1H-benzimidazol-1-yl)ethan-1-amine)
• Records 401–591Metonitazene (N,N-diethyl-2-(2-(4-methoxybenzyl)-5-nitro-1H-benzimidazol-1-yl)ethan-1-amine) … Zuranolone

Where this came from

Every record above links the page it was taken from and quotes the sentence that states it. These are the 1 source this dataset was assembled from.

• ecfr.govhttps://www.ecfr.gov/current/title-21/chapter-II/part-1308

Machine-readable

• data.jsonThe whole dataset — every record with its source URL and source quote.
• Open Knowledge Format bundleOne JSON object per line — every record's frontmatter and quoted span exactly as it is held here, in one fetch.
• How this is made and checkedWhat "verified against source" does and does not mean.

From your own code

Same records, same quotes, without scraping the page: refsource is on PyPI and npm. Each value comes back carrying the URL it was read from and the sentence on that page that states it — .source and .quote sit on the value itself rather than in a side channel, so the checking step is available instead of skipped.

pip install refsource
refsource lookup dea-controlled-substance-schedule-by-drug schedule="Schedule I"

npx -y refsource lookup dea-controlled-substance-schedule-by-drug schedule="Schedule I"

591 records. last verified against source 2026-09-01. due for re-check by 2026-12-30.

Licence. Federal regulatory text (21 CFR), not copyrightable