Assertion: methionine | /r/HasProperty | prepared by chemical routes
Facets:
value: industrially
type: LOCATION
value: from raw materials
type: OTHER
Source sentences:
text: Methionine is already known to be prepared industrially by chemical routes from raw materials derived from petrochemicals, as described for example in documents FR2903690, WO2008006977, US2009318715, US5990349, JP19660043158 and WO9408957.