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Absorption of Unsymmetrical Carbocyanines 1889 (net) charged and uncharged forms of the nuclei, using the conventional arguments of the resonance theory.3. The order of the deviations of many of the nuclei may be explained in terms of this concept, as are also many of the effects of substitution in these dyes. Rochester 4, N. Y.

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N‐methyl‐1‐naphthylcyanamide : N‐ethyl‐1‐naphthylcyanamide intermediate: 10 g. of α‐naphthyltrimethylammonium bromide product: N‐methyl‐1‐naphthylcyanamide