The bioactivity of Imidazole derivatives are attributed by the parent basic heterocycle
Types of Pigments: Blues (Phthalo); Greens (Phthalo); Reds (Quinacridone, Napthol); Speciality Pigments (Benzimidazolone, Azo Condensation); Yellows and Oranges (Azo and Heterocycle
, Diarylides, Hansas, Specialties)
structure containing a substituted heterocycle
which is connected to a
1] is a bond or a divalent organic group, and a is a sulfur-containing heterocycle
selected from the group consisting of thiirane, thietane, thiolane, thiazoline, dihydrothiophene, thiadiazine, thioxanthene, thianthrene, phenoxathiin, dihydroisothiazole, and thienofuran group or substituted form thereof.
Purpald specifically forms a bicyclic heterocycle
with aldehydes and changes from colorless to purple on oxidation.
One humble arylmethylidene heterocycle
had its moment in the limelight this fall as it became the 50 millionth substance registered by the Chemical Abstracts Service (CAS) in Columbus, Ohio on September 7.
Nicknamed arylmethylidene heterocycle
, the formula aspires to be a neuropathic pain reducer someday.
Instead, an oxygen- and nitrogen-containing heterocycle
is used as an accelerator.
TGA results showed that 5% weight loss temperatures were greater than 337[degrees]C for all the samples, and the residue at 700[degrees]C is in general dependent by the increase of phosphorus-containing heterocycle
in the macromolecular system.
Novel photoreactions of an insecticidal nitromethylene heterocycle
The light-induced homolytical nitrogen-oxygen bond cleavage yields a radical cation of the aromatic heterocycle
and an alkoxy radical.
The recently registered substance is a novel arylmethylidene heterocycle
with analgesic properties.