Clinical data
AHFS/Drugs.comInternational Drug Names
Routes of
topical, intravenous (for animal euthanasia)
ATC code
Legal status
Legal status
  • 2-butoxy-N-[2-(diethylamino)ethyl]quinoline-4-carboxamide
CAS Number
PubChem CID
CompTox Dashboard (EPA)
ECHA InfoCard100.001.484 Edit this at Wikidata
Chemical and physical data
Molar mass343.471 g·mol−1
3D model (JSmol)
  • O=C(c1c2ccccc2nc(OCCCC)c1)NCCN(CC)CC
  • InChI=1S/C20H29N3O2/c1-4-7-14-25-19-15-17(16-10-8-9-11-18(16)22-19)20(24)21-12-13-23(5-2)6-3/h8-11,15H,4-7,12-14H2,1-3H3,(H,21,24) checkY

Cinchocaine (INN/BAN) or dibucaine (USAN) is an amide local anesthetic. Among the most potent and toxic of the long-acting local anesthetics, current use of cinchocaine is generally restricted to spinal and topical anesthesia.[1][2] It is sold under the brand names Cincain, Nupercainal, Nupercaine and Sovcaine.

Medical use

Cinchocaine is the active ingredient in some topical hemorrhoid creams such as Proctosedyl.[3] It is also a component of the veterinary drug Somulose, used for euthanasia of horses and cattle.

Physical properties

Cinchocaine is relatively insoluble in alkaline aqueous solutions.

See also


  1. ^ Martindale, The Extra Pharmacopoeia, 30th ed, p1006
  2. ^ "Dibucaine". MeSH Browser. U.S. National Library of Medicine.
  3. ^ Henderson R (29 November 2020). "Proctosedyl ointment/suppositories (cinchocaine, hydrocortisone)". Netdoctor. Retrieved 25 December 2019.

Further reading

  • Abdel-Ghani NT, Youssef AF, Awady MA (May 2005). "Cinchocaine hydrochloride determination by atomic absorption spectrometry and spectrophotometry". Farmaco. 60 (5): 419–424. doi:10.1016/j.farmac.2005.03.001. PMID 15910814.
  • Souto-Padrón T, Lima AP, Ribeiro Rd (September 2006). "Effects of dibucaine on the endocytic/exocytic pathways in Trypanosoma cruzi". Parasitology Research. 99 (4): 317–320. doi:10.1007/s00436-006-0192-1. PMID 16612626. S2CID 5933459.
  • Nounou MM, El-Khordagui LK, Khalafallah N (2005). "Effect of various formulation variables on the encapsulation and stability of dibucaine base in multilamellar vesicles". Acta Poloniae Pharmaceutica. 62 (5): 369–379. PMID 16459486.
  • Aroti A, Leontidis E (2001). "Simultaneous Determination of the Ionization Constant and the Solubility of Sparingly Soluble Drug Substances. A Physical Chemistry Experiment". Journal of Chemical Education. 78 (6): 786–788. Bibcode:2001JChEd..78..786A. doi:10.1021/ed078p786.