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Sterile water becomes more relevant when a compound is intended to be used entirely in one sitting, or when a prescriber has specifically indicated that a preservative-free solution is required for example, due to sensitivity to benzyl alcohol
of these, 3060% can be annotated to a metabolite name at MS1 mass-match level (confidence level 3), 1530% confirmed by MS2 spectral matching against HMDB or MassBank (confidence level 2), and 515% confirmed by MS2 + retention time match against authentic standards (confidence level 1)
PMID: 136 LiuYLiuYHuJHanJSongLLiuXet al
They do not compete for absorption
A detailed Certificate of Analysis is maintained for each batch, so you can review the exact purity percentage and test results for your specific vial if needed