Precursor DB — browse compounds

Structure of (1-bromocyclopentyl)(2-chlorophenyl)methanone

(1-bromocyclopentyl)(2-chlorophenyl)methanone

CAS 6740-86-9

ketamine precursor DEA Special Surveillance List

Structure of (1R,2R)-(-)-chloropseudoephedrine

(1R,2R)-(-)-chloropseudoephedrine

CAS 771434-80-1

chloroephedrine EU Scheduled Precursors UK Drug Precursors

Structure of (1R,2R)-(-)-chloropseudoephedrine

(1R,2R)-(-)-chloropseudoephedrine

CAS 771434-80-1

chloroephedrine category 1 EU Scheduled Precursors UK Drug Precursors

Structure of (1R,2S)-(-)-chloroephedrine

(1R,2S)-(-)-chloroephedrine

CAS 110925-64-9

chloroephedrine category 1 EU Scheduled Precursors UK Drug Precursors

Structure of (1S,2R)-(+)-chloroephedrine

(1S,2R)-(+)-chloroephedrine

CAS 1384199-95-4

chloroephedrine category 1 EU Scheduled Precursors UK Drug Precursors

Structure of (1S,2S)-(+)-chloropseudoephedrine

(1S,2S)-(+)-chloropseudoephedrine

CAS 73393-61-0

chloroephedrine category 1 EU Scheduled Precursors UK Drug Precursors

Structure of (1S,4R)-p-Mentha-2,8-dien-1-ol

(1S,4R)-p-Mentha-2,8-dien-1-ol

CAS 22972-51-6

cannabinoid precursor BAFA

Structure of (2-chlorophenyl)(cyclopentyl)methanone

(2-chlorophenyl)(cyclopentyl)methanone

CAS 6740-85-8

ketamine precursor DEA Special Surveillance List

Structure of 1,1'-Carbonyldiimidazole

1,1'-Carbonyldiimidazole

CAS 530-62-1

DEA Special Surveillance List

Structure of 1,1,2-Trichlorotrifluoroethane

1,1,2-Trichlorotrifluoroethane

CAS 76-13-1

DEA Special Surveillance List

Structure of 1,1-Dichloro-1-fluoroethane

1,1-Dichloro-1-fluoroethane

CAS 1717-00-6

DEA Special Surveillance List

Structure of 1,3-Dimethoxy-5-octylbenzene

1,3-Dimethoxy-5-octylbenzene

CAS 41497-46-5

cannabinoid precursor BAFA

Structure of 1,4-Butanediol

1,4-Butanediol

CAS 110-63-4

GHB precursor Voluntary monitoring DEA Special Surveillance List EU Voluntary Monitoring List 2016

Structure of 1-((2-chlorophenyl)(methylimino)methyl)cyclopentane-1-ol

1-((2-chlorophenyl)(methylimino)methyl)cyclopentane-1-ol

CAS 6740-87-0

ketamine precursor DEA Special Surveillance List

Structure of 1-(4-bromophenyl)propan-1-one

1-(4-bromophenyl)propan-1-one

CAS 10342-83-3

cathinone precursor DEA Special Surveillance List

Structure of 1-(4-chlorophenyl)propan-1-one

1-(4-chlorophenyl)propan-1-one

CAS 6285-05-8

cathinone precursor added 2026 category 1 category 1 NI NI BAFA

Structure of 1-(4-methoxyphenyl)propan-2-one

1-(4-methoxyphenyl)propan-2-one

CAS 122-84-9

amphetamine precursor non scheduled voluntary monitoring EU Voluntary Monitoring List 2016

Structure of 1-(4-methylphenyl)propan-1-one

1-(4-methylphenyl)propan-1-one

CAS 5337-93-9

cathinone precursor added 2026 category 1 category 1 NI BAFA DEA Special Surveillance List

Structure of 1-(5-Fluoropentyl)-1H-indazole-3-carboxylic acid

1-(5-Fluoropentyl)-1H-indazole-3-carboxylic acid

CAS 1535166-43-8

apinaca precursor BAFA

Structure of 1-Benzylpiperidin-4-one

1-Benzylpiperidin-4-one

CAS 3612-20-2

fentanyl precursor DEA Special Surveillance List

Structure of 1-Butyl-3,5-dimethoxybenzene

1-Butyl-3,5-dimethoxybenzene

CAS 51768-57-1

cannabinoid precursor BAFA

Structure of 1-Chloro-2,4-dinitrobenzene

1-Chloro-2,4-dinitrobenzene

CAS 97-00-7

nitazene precursor BAFA DEA Special Surveillance List

Structure of 1-Chloro-N-methyl-1-phenylpropan-2-amine

1-Chloro-N-methyl-1-phenylpropan-2-amine

CAS 25394-33-6

chloroephedrine DEA Special Surveillance List

Structure of 1-Heptyl-3,5-dimethoxybenzene

1-Heptyl-3,5-dimethoxybenzene

CAS 6121-64-8

cannabinoid precursor BAFA