5-[4′-(N-METHYL-1′′,3′′-BENZIMIDAZOL-2′′-YL)PHENYL]-10,15,20-TRIS(4′-SULFOPHENYL)PORPHIN AND ITS APPLICATION AS ACID INDICATOR FOR OPTICAL AND VISUAL DETERMINATION OF pH Russian patent published in 2024 - IPC C07D487/22 A61K31/409 A61K31/4184 G01N31/22 

Abstract RU 2813631 C1

FIELD: chemical industry.

SUBSTANCE: group of inventions relates to 5-[4'-(N-methyl-1'',3''-benzimidazole-2''-yl)phenyl]-10,15,20-tris(4'-sulfophenyl)porphine and its use as an acid indicator for optical and visual determination of pH.

EFFECT: creation of a dye characterized by a high contrast of colour transition for visual and optical determination of pH, as well as a narrow range of pH transition.

2 cl, 4 dwg, 3 ex

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Authors

Syrbu Sergei Aleksandrovich

Lebedeva Natalia Shamilevna

Iurina Elena Sergeevna

Kiselev Aleksei Nikolaevich

Lebedev Mikhail Aleksandrovich

Bychkova Svetlana Aleksandrovna

Dates

2024-02-14Published

2022-12-15Filed