Water-soluble methine derivatives of thiazole
AssigneeFuji Photo Film Co., Ltd.
InventorsAkihiko Ikegawa, Toshinao Ukai, Masayuki Kawakami
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Abstract
A methine compound represented by the following formula (I): ##STR1## wherein Z.sub.1 and Z.sub.2 each represent a non-metallic atomic group necessitated for forming a five-membered or six-membered, nitrogen-containing heterocyclic ring, R.sub.1 and R.sub.2 each represent an alkyl group, X represents an inorganic anion, k represents a number necessitated for adjusting the electric charge of the molecule to zero, and n represents 0 or 1; with the proviso that when n is 1, the five-membered or six-membered, nitrogen-containing heterocyclic ring formed by Z.sub.2 is cationic, k is not zero and X represents chloride ion. The compound is useful as a spectral sensitizing dye and an antitumor agent.
Claims7
A methine compound represented by the following formula (V):
- ##STR11## wherein A represents ##STR12## wherein R.sub.3, R.sub.4 and R.sub.5 each represent an alkyl group having 3 or less carbon atoms;
- R.sub.6, R.sub.7, R.sub.8 and R.sub.9 together form a benzene ring or a naphthalene ring, or R.sub.6 and R.sub.8 each represent a hydrogen atom or an alkyl group having 3 or less carbon atoms and R.sub.7 and R.sub.9 together form a single bond;
- x represents a halogen anion;
- k represents a number necessitated for adjusting the electric charge of the molecule to zero;
- and m represents 0 or 1;
- with the proviso that when m is 1, A is cationic, k is not zero and X represents a chloride ion.
Dependencies are inferred from the claim text.