NOVELTY - Production of synthesis gas-derived products involves selecting stoichiometric ratio for primary synthesis gas-derived product and secondary synthesis gas-derived product, producing primary synthesis gas-derived product, directing excess synthesis gas product from production of primary product to production of secondary synthesis gas-derived product and producing secondary synthesis gas-derived product. Stoichiometric ratio is chosen such that excess components make up for shortage of components needed for production of the secondary synthesis gas-derived product.    USE - Production of synthesis gas-derived products e.g. methanol, ammonia and synthetic natural gas (all claimed).    ADVANTAGE - The synthesis gas-derived products are efficiently produced.    DETAILED DESCRIPTION - Production of synthesis gas-derived products involves selecting stoichiometric ratio for synthesis gas above ratio normally required for primary synthesis gas-derived product and below ratio normally required for secondary synthesis gas-derived product, producing primary synthesis gas-derived product, directing excess synthesis gas product from production of primary synthesis gas-derived product to production of secondary synthesis gas-derived product and producing secondary synthesis gas-derived product. The stoichiometric ratio for synthesis gas is chosen such that excess components make up for shortage of components needed for production of the secondary synthesis gas-derived product. An INDEPENDENT CLAIM is included for system (100) for producing two or more synthesis gas-derived products, which has a primary shift section to produce synthesis gas with primary stoichiometric ratio above stoichiometric ratio required to produce primary synthesis gas-derived product and below stoichiometric ratio required to produce secondary synthesis gas-derived product, a primary apparatus to produce the primary synthesis gas-derived product, a secondary apparatus to produce the secondary synthesis gas-derived product and a primary channel to direct excess synthesis gas components from the primary apparatus to the secondary apparatus.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the system.    System (100)    Shift section (102)    Methanol synthesis system (104)    Methanol-to-gasoline system (106)    Pressure swing adsorption system (108)