Number | Date | Country | Kind |
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2075/94 | Jun 1994 | CHX |
Number | Name | Date | Kind |
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4415685 | Iqbal et al. | Nov 1983 | |
4579949 | Rochat et al. | Apr 1986 |
Entry |
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W. Herbst, K. Hunger: Industrial Organic Pigments pp. 41-43, pp. 427-428 & 453-454 (1993). |
J. Mizuguchi et al., Acta Crystallograpica, vol. B48, Part 5, pp. 696-700, (1992). |