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Small-molecule structure elucidation using mass spectrometry
People who take medications regularly that decrease stomach acid production can also become deficient in vitamin B12 for this reason, whether they consume enough from their diets or not
Brain Res
They also differ chemically, which matters at the bench: 5-Amino-1MQ is a permanently charged quaternary quinolinium salt, so molar calculations, solubility and analytical identity follow small-molecule rather than nucleotide or peptide conventions
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