Hi, I have found that in MS4.2 the option update hydrogens did both, add hydrogens, but also deleted isolated hydrogens (not bonded to any other atom). It was an expected and usefoul behavior, but in MS4.3 this option also add hydrogens like in MS4.2 but only delete hydrogens that are bonded to other atoms and should not be... For instance, a water molecule with 4 H, it deletes 2 H....

Is there any other tool to delete these hydrogens that, after some reaction, should not be there???


thanks