C4Testreaktion
C4Testreaktion is a term encountered in a small subset of German-language chemical literature. It refers, in the sources that use it, to a qualitative reaction or sequence of steps claimed to diagnose or characterize a substance labeled C4. There is no universally accepted definition, and the term is not part of standard chemical nomenclature.
Definition and usage vary by author. Some descriptions present C4Testreaktion as a specific colorimetric or precipitative
Literature and history: The term appears in a limited number of mid- to late-20th-century German theses, conference
Notes: This article summarizes limited, non-standard usage. For precise meaning, the reader should consult the original