The above attributes distinguish the new Ru complex from other Z-selective olefin metathesis catalysts based on Mo, W and Ru. Importantly, this unique trait did not come at the cost of limited general usability under 'classical' conditions. On the contrary, the new complex was found to match the activity of known stereoretentive catalysts such as Ru2 even in the case of complex polyfunctional substrates. In addition, the new catalyst Ru3 can be used in valorisation of biosourced alkene feedstock such as oleic acid and in the production of sex pheromones used in agriculture for pest control.