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A: You can, but introduce slowly and avoid layering multiple strong actives at the same time if you get irritation
10.1038/s41467-021-22097-0 Nat Commun
LC-MS confirmation provides molecular weight data for each peak, confirming compound identity independently of retention time matching
Pasello, M
Oct 2020;59(7):2841-2856
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![Product ion spectra of protonated A liraglutide ([M + 4H] 4+ , m/z =](https://www.researchgate.net/publication/369402188/figure/fig1/AS:11431281129242916@1679497804894/Product-ion-spectra-of-protonated-A-liraglutide-M-4H-4-m-z-9385-and-B.png)
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