Methylene blue trihydrate7220-79-3100 % similar Methylene blue61-73-490 % similar Azure A531-53-374 % similar Azure ii37247-10-270 % similar Azure B531-55-570 % similar Toluidine blue92-31-965 % similar Thionine581-64-647 % similar Acridine orange494-38-246 % similar Azure C531-57-740 % similar Pyronine92-32-039 % similar Neutral red553-24-238 % similar Wurster'S blue100-22-134 % similar N,N-Dimethyl-2-naphthalenamine2436-85-333 % similar Thionine acetate78338-22-433 % similar p-(Dimethylamino)benzenediazonium trichlorozincate6087-56-532 % similar N,N,N′,N′-Tetramethylbenzidine366-29-031 % similar Tetramethyl-P-phenylenediamine dihydrochloride637-01-431 % similar 3-Chloro-N,N-dimethylbenzenamine6848-13-131 % similar Dimethyl-M-toluidine121-72-230 % similar Crystal violet548-62-930 % similar