PubMed · 4513176
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
1973. More than packaging.. https://pubmed.ncbi.nlm.nih.gov/4513176/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
Explore the source record for details and available documents.
Using MS/MS, we have identified ions at m/z 399, 421, 609.4, and 819.9 as those of tris (2-butoxyethyl) phosphate, originating in the gray rubber stoppers commonly used as closures in commercial sources of peptides and proteins. The compound is readily extracted by contact with organic solvents such as alcohol or acetic acid and even by water alone. Zinc salts of proteins are also observed, presumably from zinc oxide fillers present in the stoppers.
Explore the source record for details and available documents.