NCIt definition : A unit for measuring catalytic (e.g. enzymatic) activity, the ability of the compound
to accelerate the chemical reaction by providing a lower energy pathway between the
reactants and the products. One katal is that catalytic activity which will raise
the rate of reaction by one mole per second in a specified assay system. When the
katal is used, the measurand should be specified by reference to the measurement procedure;
the measurement procedure must identify the indicator reaction. The katal is not used
to express a rate of reaction itself, which should be expressed in moles per second.
Katal is coherent with the SI.;
Alternative definition : CDISC: A unit for measuring catalytic (e.g. enzymatic) activity, the ability of the
compound to accelerate the chemical reaction by providing a lower energy pathway between
the reactants and the products. One katal is that catalytic activity which will raise
the rate of reaction by one mole per second in a specified assay system. When the
katal is used, the measurand should be specified by reference to the measurement procedure;
the measurement procedure must identify the indicator reaction. The katal is not used
to express a rate of reaction itself, which should be expressed in moles per second.(NCI);
Currated CISMeF NLP mapping