Assertion: methylphenidate | /r/HasProperty | synthesized in unsuccessfulattempt
Facets:
Source sentences:
text: Methylphenidate (Ritalin) was first synthesized in 1944 in an (unsuccessful) attempt to create a stimulant that would not induce addiction or tolerance.
text: Methylphenidate was first synthesized in 1944 in an (unsuccessful) attempt to create a stimulant that would not induce addiction or tolerance.