Perkin, Arthur George, 1861-, Everest, Arthur Ernest, 1888- · London, New York [etc.] Longmans, Green and co. · leaf 366
TPYRAN GROUP I OH -OH A H Me 5 : i-dihydroxy-2-m : p-dihydroxyphenyl-$-ethyl-\ \ ^-benzopyranol- anhydroiodide, tetra-ethyl ether, crystallises in orange needles, melting- point 169 — 172° C. — I OH OH ;t 5 : -i-dihydroxy-2-p-hydroxyphenyl-n-ethyl-i : ^-benzopyranol-anhy- droiodtfe, needle-shaped… … The tri-ethyl ether, orange coloured rhombic crystals, melts at 178— i8o°C. A considerable number of compounds of this type related to flavones have been synthesised by Billow (Ber., 1901, 34, 1189, an^ 1782 ; 1903, 36, 1941, 2292, and 3607 ; 1904, 37, 354, and 4715 ; 1906, 39, 214, and 2027) from…
Dyes and dyeing -- Chemistry
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