Collect. Czech. Chem. Commun. 1957, 22, 1789-1792
https://doi.org/10.1135/cccc19571789

Metallochromic indicators. III. Preparation of 3,3'-bis-N,N-di(carboxymethyl)aminomethylthymolsulphonphthalein (methylthymol blue)

J. Körbl

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