Helvetica Chimica Acta p. 359 - 379 (1990)
Update date:2022-08-05
Topics:
Gunzenhauser, Sigmund
Balli, Heinz
Halochromic Molecules.Substituted 6,11-Dihydrospiro<<1>benzopyrano<4,3-b>indol-6,9'-9'H-xanthene>-2',6'-diamines and Their Aza Analogues: New Chromogenes for Black Images We have synthesized a series of substituted 6,11-dihydrospiro<<1>benzopyrano<4,3-b>i
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