Assertion: alkaloid's chemical structure | /r/SimilarTo | morphine
Facets:
value: very
type: DEGREE
Source sentences:
text: Due to the fact that the chemical structure of thebaine is very similar to morphine and codeine (figure 2) using the peak with the more similar retention time to morphine and codeine (approximately 1.3 min) was used to create a calibration curve.