Rocuronium intermediate

Appearance: This product is a white or off white crystalline powder;
Specific rotation: should be+82 º to+88 º;
Related substances: Impurity EPAO should not exceed 0.5%; Isomers shall not exceed 0.1%; Other impurities must not exceed 1.8%, why not exceed 2.5%.
Morpholine: should be less than 2.0%;
Moisture content: should not exceed 0.5%;
Dry weight loss: should not exceed 0.5%;
Burning residue: should not exceed 0.1%;
Content: not less than 98.0%.