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Without the named source, D50.0 isn't supportable and the claim flags

Cell 93 (2), 189201

The quality of a research compound depends not only on purity specifications but also on manufacturing controls, testing standards, and traceability

Cyanocobalamin is sparingly soluble in alcohol and water (1 in 80 of water), but insoluble in chloroform, acetone, and ether

Cut a slit in the lid that's wide enough for needles to fit through