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Title: Thiamylal  
Author: World Heritage Encyclopedia
Language: English
Subject: Alcoholic beverage, Spirobarbital, Centalun, Nitromethaqualone, Pentabamate
Publisher: World Heritage Encyclopedia


Systematic (IUPAC) name
Clinical data
Legal status
Pharmacokinetic data
Metabolism Hepatic
Half-life 14.3 h (cats)
CAS number  YesY
ATCvet code QN01
ChemSpider  YesY
Synonyms Thiamylal, Thioseconal, Surital
Chemical data
Formula C12H18N2O2S 
Mol. mass 254.35 g/mol

Thiamylal (Surital) is a barbiturate derivative invented in the 1950s. It has sedative, anticonvulsant, and hypnotic effects, and is used as a strong but short acting sedative. Thiamylal is still in current use, primarily for induction in surgical anaesthesia [1] or as an anticonvulsant to counteract side effects from other anaesthetics.[2] It is the thiobarbiturate analogue of secobarbital.


  1. ^ Hsieh MY, Hung GY, Hsieh YL, Chang CY, Hwang B. Deep sedation with methohexital or thiamylal with midazolam for invasive procedures in children with acute lymphoblastic leukemia. Acta Paediatrica Taiwan. 2005 Sep-Oct;46(5):294-300.
  2. ^ Tsai CJ, Wang HM, Lu IC, Tai CF, Wang LF, Soo LY, Lu DV. Seizure after local anesthesia for nasopharyngeal angiofibroma. Kaohsiung Journal of Medical Sciences. 2007 Feb;23(2):97-100.

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