| 摘要 |
PCT No. PCT/GB94/02348 Sec. 371 Date May 8, 1996 Sec. 102(e) Date May 8, 1996 PCT Filed Oct. 26, 1994 PCT Pub. No. WO95/14060 PCT Pub. Date May 26, 1995A compound of Formula (1) and salts thereof: <IMAGE> (1) wherein: W is Cl or Br; A is optionally substituted alkyl; each R independently is halogen, alkyl, alkoxy or carboxy; n is 0 or 1; a+b is 0 to 4; each X independently is O, S or NR1 wherein R1 is H or optionally substituted alkyl; B is a divalent organic linker group; and Z is an aromatic nitrogen ring heterocycle devoid of cellulose-reactive groups.
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