Microtoxicology. X. Colorimetric reactions and optical crystallographic properties of five synthetic antispasmodics

The antispasmodics Profenil Citrate, Syntropan phosphate, Trasentin hydrochloride, Pavatrine hydrochloride, and Lacbesine chloride were subjected to a large number of colorimetric and precipitation reagents. Although definite differences between these drugs were observed, the drugs were difficult to identify b these methods. On the other hand, their optical crystallographic properties eagle a positive identification to be made from very small amounts of material. Combination of these methods with melting point determinations may be useful to the toxicological chemist.