SHEET /about/labeling · LABELING
How we label every value
Not every number is equally solid. A weight lifted from a reference database stands on firmer ground than a lethal dose extrapolated from a rat to a person. So every value on the site wears a small chip that tells you where it stands. There are three.
From source. Taken directly from a cited source and shown as reported: a molecular weight or formula from PubChem, a description from Wikidata, a reported animal LD50, or a hand-curated fact we have checked. We did not change the number.
Computed. Calculated by us with a transparent, tested formula: structural descriptors and similarity from RDKit, the decay curve behind "still in your system", the Widmark blood alcohol estimate, the Scoville scale. The inputs are labeled, and the math is the same for every molecule.
Inferred. An estimate that crosses contexts, so it carries real uncertainty. The clearest case is scaling an animal LD50 to "a lethal dose for someone your size": a rough extrapolation across species and body mass, shown as neutral science, never a threshold to act on.
Neutral science, not advice
Toxicity and dose figures are context, not medical, health, or safety advice. Animal data is an estimate about animals; a scaled dose is an illustration, not a limit for a real person. Nothing here should be used to make a health decision.
See where the data comes from, or contact us.