Systematic (IUPAC) name
Clinical data
Legal status
CAS number  N
ATC code None
ChemSpider  YesY
Chemical data
Formula C19H25NS 
Mol. mass 299.47 g/mol

Benocyclidine (BTPC), or benzothiophenylcyclohexylpiperidine (BTCP), is a psychoactive recreational drug of the arylcyclohexylamine class. It was first described in a patent application naming Marc Caron and colleagues at Duke University in 1997.[1]

It acts as a potent and selective dopamine reuptake inhibitor (DRI) and a psychostimulant.[2][3] Unlike related compounds like phencyclidine and ketamine, benocyclidine is a pure DRI with negligible affinity for the NMDA receptor, and it therefore lacks any anticonvulsant, anesthetic, hallucinogenic, or dissociative effects.[2][3] It has been used to label the dopamine transporter.[4][5]

BCP was also used to try to find a common pharmacophore for DRI type stimulants.[6]

More recently, benocyclidine has been found in several ecstasy tablets, sold as MDMA.[7]

Ahmadi TCP and BTCP analogues (2014)

Ahmadi, Abbas (2014). "Synthesis and Pain Perception of New Analogues of Phencyclidine in NMRI Male Mice". Mini-Reviews in Medicinal Chemistry 14 (1): 64–71.  

Ahmadi TCP and BTCP analogues (2014): IV,V,VI,VII.
  1. 2,2,6,6-Tetramethylpiperidine (TMP), or 4-hydroxy-TMP is condensed with cyclohexanone.
  2. enamine-imine tautomerism (c.f. keto-enol tautomerization).
  3. React with organometallic heteroaromatic compounds.

See also


  1. ^ PCT Patent Application WO199712513 (see also US Patents Nos.5,866,756 and 6,218,595
  2. ^ a b Vignon J, Pinet V, Cerruti C, Kamenka JM, Chicheportiche R. (1998). "[3H]N-[1-(2-benzo(b)thiophenyl)cyclohexyl]piperidine ([3H]BTCP): a new phencyclidine analog selective for the dopamine uptake complex.". Eur J Pharmacol. 148 (3): 427–436.  
  3. ^ a b Chaudieu I, Vignon J, Chicheportiche M, Kamenka JM, Trouiller G, Chicheportiche R. (1989). "Role of the aromatic group in the inhibition of phencyclidine binding and dopamine uptake by PCP analogs.". Pharmacol Biochem Behav. 32 (3): 699–705.  
  4. ^ Filloux F, Hunt MA, Wamsley JK. (1989). "Localization of the dopamine uptake complex using [3H]N-[1-(2-benzo(b)thiophenyl)cyclohexyl]piperidine ([3H]BTCP) in rat brain.". Neurosci Lett. 100 (1–3): 105–110.  
  5. ^ Maurice T, Vignon J, Kamenka JM, Chicheportiche R. (1989). "In vivo labelling of the mouse dopamine uptake complex with the phencyclidine derivative [3H]BTCP". Neurosci Lett. 101 (2): 234–238.  
  6. ^ Froimowitz M, Wu KM, Rodrigo J, George C (2000). "Conformational preferences of the potent dopamine reuptake blocker BTCP and its analogs and their incorporation into a pharmacophore model". J Comput Aided Mol Des 14 (2): 135–46.  
  7. ^ "EcstasyData Testing Result: Blue Butterfly". Ecstasy and other drug testing. Erowid Center. Retrieved 2 February 2012.