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1192656-58-8

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1192656-58-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1192656-58-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,2,6,5 and 6 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1192656-58:
(9*1)+(8*1)+(7*9)+(6*2)+(5*6)+(4*5)+(3*6)+(2*5)+(1*8)=178
178 % 10 = 8
So 1192656-58-8 is a valid CAS Registry Number.

1192656-58-8Downstream Products

1192656-58-8Relevant 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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