Compounds Containing Deuterium or Tritium

For compounds, containing deuterium or tritium two separate formulae are posted, one with a deuterium or tritium isotope, another one has the isotopes replaced with hydrogen. The search term 

CN Ethanol, labeled with deuterium (9CI) (CA INDEX NAME) OTHER NAMES-CN Ethanol-d5 

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The extra mass associated with these labeled atoms may cause compounds containing deuterium or tritium atoms to react more slowly than compounds with ordinary hydrogen atoms. 

Useful labelled compounds containing deuterium or tritium normally require the isotopic hydrogen to be attached to carbon, so the acid-base equilibrium will require cleavage of a C-H bond, where acid... 

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