5-[4'-(1",3",7"-TRIMETHIXANT-2"-YL)PHENYL] 10,15,20-TRIS-(N-METHYLPYRIDINIUM-3'-YL)PORPHYRIN TRIIODIDE, HAVING PROPERTIES HIGHLY ACIDIC MEDIA pH-INDICATOR Russian patent published in 2024 - IPC C07D487/22 G01N31/22 

Abstract RU 2818821 C1

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry, namely to a novel heterocyclic compound, which can be used as a colour or fluorescent indicator for visual detection of two transitions in the range of pH=2–1.7 and pH=1.7–1.5 in aqueous media and as a fluorescent indicator of the transition pH=1.7–1.5 in biological fluids. Invention compound is 5-[4'-(1",3",7"-trimethixant-2"-yl)phenyl] 10,15,20-tris-(N-methylpyridinium-3'-yl)porphyrin triiodide.

EFFECT: described is compound 5-[4'-(1",3",7"-trimethixant-2"-yl)phenyl] 10,15,20-tris-(N-methylpyridinium-3'-yl)porphyrin triiodide for use as a pH indicator of strongly acidic media.

1 cl, 3 dwg, 2 ex

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Authors

Syrbu Sergei Aleksandrovich

Lebedeva Natalia Shamilevna

Iurina Elena Sergeevna

Kiselev Aleksei Nikolaevich

Lebedev Mikhail Aleksandrovich

Dates

2024-05-06Published

2023-09-21Filed