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5520-99-0

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5520-99-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5520-99-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,2 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 5520-99:
(6*5)+(5*5)+(4*2)+(3*0)+(2*9)+(1*9)=90
90 % 10 = 0
So 5520-99-0 is a valid CAS Registry Number.

5520-99-0Downstream Products

5520-99-0Relevant articles and documents

meso-Tetraphenylporphyrin with a pi-system extended by fusion with anthraquinone

Filatov, Mikhail A.,Heinrich, Ernesta,Landfester, Katharina,Baluschev, Stanislav

, p. 6977 - 6983 (2015/06/25)

Fusion with a 9,10-anthraquinone moiety was achieved to extend porphyrin's π-system. A bridged dihydroisoindole derivative was used to prepare the corresponding meso-tetraphenyltetraanthraquinonoporphyrin (Ph4TAQP) via a thermal retro-Diels-Alder reaction. The basic optical properties of the prepared new anthraquinonoporphyrin and its complexes with Zn and Pd were studied.

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