List of articles in "Chemical Substance" category - Page 978

Hypericin is a naphthodianthrone a red-colored anthraquinone-derivative which together with hyperforin is one of the principal active constituents of Hypericum (Saint John’s wort). Hypericin is believed to act as an […]

Xylose (cf. Greek ξύλον xylon wood) is a sugar first isolated from wood and named for it. Xylose is classified as a monosaccharide of the aldopentose type which means that […]

3-Methylenecyclopropene is a hydrocarbon with chemical formula C4H4 and CAS number 4095-06-1. It dimerizes or polymerizes readily but is more stable than cyclobutadiene.

Cyclobutadiene is the smallest [n]-annulene ([4]-annulene) an extremely unstable hydrocarbon having a lifetime shorter than five seconds in the free state[citation needed]. It has chemical formula C4H4.

Tetrahedrane is a platonic hydrocarbon with chemical formula C4H4 and a tetrahedral structure. Extreme angle strain (carbon bond angles deviate considerably from the tetrahedral bond angle of 109.5°) prevents this […]

Ergosterol (ergosta-5722-trien-3β-ol) is a sterol found in fungi and named for ergot a common name for the members of the fungal genus Claviceps from which ergosterol was first isolated. Ergosterol […]

Congo red is the sodium salt of 33′-([11′-biphenyl]-44′-diyl)bis(4-aminonaphthalene-1-sulfonic acid)(formula: C32H22N6Na2O6S2; molecular weight: 696.66 g/mol). It is a secondary diazo dye. Congo red is water soluble yielding a red colloidal solution; […]

Fumaric acid or trans-butenedioic acid is the chemical compound with the formula HO2CCH=CHCO2H. This white crystalline compound is one of two isomeric unsaturated dicarboxylic acids the other being maleic acid. […]

Iron(II) fumarate also known as ferrous fumarate is the iron(II) salt of fumaric acid occurring as a reddish-orange powder used to supplement iron intake. It has the chemical formula C4H2FeO4. […]

Allyl chloride is the organic compound with the formula CH2=CHCH2Cl. This colorless liquid is insoluble in water but soluble in common organic solvents. It is mainly converted to epichlorohydrin used […]