The thermal stability of the coloured open form of 5-methoxy-(7) and 5′-piperidinomethyl-1,3,3-rimethylspiro(indoline-2,3′-[3H]naphtho[2,1-b][1,4]oxazine)(6) is strongly dependent on pH.
5-甲氧基-(7)和5'-
哌啶子基甲基1,,3,3-rimethylspiro(二氢
吲哚-2,3'-[3 H ]
萘[ 2,1- b ] [ 1,4]恶嗪)(6)强烈依赖于pH。