hello all,

we are currently using UPLC-MS to perform some analytical tests. the method for detecting the parent compound is developed and now we are trying to determine if there is any metabolite in the sample. tried the software provided by the supplier ( waters ) but always get an error message: we input the m.w. of the daughter ions and search for them in the sample run, it only pops out error message. any suggestions?

thank you in advance for your reply!

best regards,
shan