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85193-05-1

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85193-05-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 85193-05-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,1,9 and 3 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 85193-05:
(7*8)+(6*5)+(5*1)+(4*9)+(3*3)+(2*0)+(1*5)=141
141 % 10 = 1
So 85193-05-1 is a valid CAS Registry Number.

85193-05-1Downstream Products

85193-05-1Relevant articles and documents

Synthesis of S,S-dialkyl-N-(9,10-dioxo-9,10-dihydroanthracen-1-yl) sulfoximides and specificities of their base-catalyzed intramolecular heterocyclizations into naphtho[1,2,3-cd]-indol-6(2H)-ones

Kargina,Gornostaev,Nefedov

, p. 70 - 77 (2013/03/28)

Heating of 6H-anthra[1,9-cd][1,2]oxazol-6-ones with dialkyl sulfoxides in sulfolane gave S,S-dialkyl-N-(9,10-dioxo-9,10-dihydroanthracen-1-yl)sulfoximides which underwent cyclization to naphtho-[1,2,3-cd]indol-6(2H)-one derivatives on heating in boiling tetrahydrofuran in the presence of sodium methoxide. p-Toluenesulfinic acid was isolated as by-product in the cyclization of S-methyl-S-(4-methylphenyl)-N-(9,10-dioxo-9,10-dihydroanthracen-1-yl) sulfoximide. The heterocyclizations of S,S-dipropyl- and S,S-dibutyl-N-(9,10- dioxo-9,10-dihydroanthracen-1-yl)sulfoximides to 1-ethyl- and 1-propylnaphtho[1,2,3-cd]-indol-6(2H)-ones were accompanied by formation of the corresponding 1-[1-hydroxyethyl(propyl)]naphtho-[1,2,3-cd]indol-6(2H)-ones.

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