escharin
Escharin is a term that has appeared in historical pharmacology and chemistry texts to denote a chemical substance or preparation, but there is no consensus on a single chemical identity. In some older sources, escharin referred to caustic or eschar-inducing preparations used locally to create an eschar on tissue. In other references, it has been used as a name for a hypothetical or experimental compound studied for pharmacological activity, though details are scarce and the term appears infrequently in modern literature. The lack of a stable, modern definition means that escharin is primarily of historical interest and should be distinguished from similarly named substances, and from escharotics, which are caustic agents used to produce an eschar deliberately.
Chemical identity: No universally accepted molecular formula or registry entry is associated with escharin in current
Safety and regulation: Given the uncertain identity, no contemporary safety data or regulatory status can be
See also: Eschar, Escharotics, History of pharmacology, Archaic drug names.
Notes: This article summarizes the uncertain usage of the term; if you have a specific historical source