Here we illustrate the application of the concept of strategic molecules for selection of reaction pathways for potential valorisation of waste CST. CST is a by-product form the Kraft pulping process in the paper processing industry. It consists of an oil mixture of unsaturated and volatile C10H16 terpene isomers: aand b-pinene, D-carene, and a mixture of other terpenes, 69 e.g. limonene. Previous work has focused on transformations on CST to fragrance chemicals and into precursors for the pharmaceutical industry. This study uses the strategic molecules previously identified on the basis of 4-HAP network and one other network for the pathway searches. The second network is larger and is centred around one of the feedstock components, limonene. In the following it will be called the "limonene network". 93.25 % of the molecules from the 4-HAP network are included in the limonene network. The main reason for the extension of the network is to achieve a higher coverage of feedstocks and end products regions. The limonene network consists of 12,238,931 nodes and 24,884,365 edges. Its exponents for the degree distributions are gout =2.0 and gin =2.5 (see Equation ). We now perform pathways searches in the described limonene network. We consider three different experiments to show possibilities of integrating the concept of strategic molecules in process development.