Very minor edits required.

P2 L4 change the forming mechanisms of the impurities to the mechanisms of formation of the impurities
P5 L37 change on an Inertsil to using an Inertsil
P5L49 remove the dot between mL and min-1 and make this change throughout the document (mg mL-1 and mol L-1 too, also be consistent with the use of ml or mL, again make this change throughout the document
P9L54 Change [M+H]+ to [M + H]+ and make this change for all ion notations throughout
P10 L41 the term fragmentation is used this should be corrected to dissociation. Throughout the discussion of tandem MS data, fragmentation, fragmented and fragment ions are terms used this should be corrected to dissociation, dissociated and product ions throughout the document
P13 L57 insert the before β-lactam
P18L18 ‘it was indicated that the impurity F1...’ this needs more detail? Is this reference or interpretation? How is it indicated? Does the author mean ‘it is suggested that the impurity F1 was produced..’? Similarly P19L18 and P20L8.