9'-(9H)xanthen]-3-one,6'-(dibutylamino)-3'-methyl-2'-(phenylamino)-Spiro[isobenzofuran-1(3H) |
2-Phenylamino-3-methyl-6-di-n-butylaminofluoran |
3-Di-n-butylamino-6-methyl-7-phenylaminofluoran |
heat(pressure)senditive black tf-bl3 |
Spiro[isobenzofuran-1(3H),9'-(9H)xanthen]-3-one,6'-(dibutylamino)-3'-methyl-2'-(phenylamino)- |