Background:

SZ1676 is a derivative of SZ1677, which is a neuromuscular blocking agent.

SZ1676 is the 3-acetoxy derivative[1]. The neuromuscular (NM) effects of SZ1676 and SZ1677 are compared in beagle dogs. SZ1677 (ED90=19.2±2.6 μg/kg) is 1.86 times more potent than SZ1676 (ED90=35.8±2.5 μg/kg)[2].

[1]. B?azewicz A, et al. Application of high-performance liquid chromatography with amperometric and coulometric detection to the analysis of SZ1677, a new neuromuscular blocking agent, and its two derivatives. J Chromatogr A. 2008 Sep 12;1204(1):114-8. [2]. Francis F. Foldes, et al. Comparison of the Neuromuscular Effects of SZ1676, SZ1677 and Vecuronium in Beagle Dogs. Muscle Relaxants pp 379-379.