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833485-56-6

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833485-56-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 833485-56-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,3,4,8 and 5 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 833485-56:
(8*8)+(7*3)+(6*3)+(5*4)+(4*8)+(3*5)+(2*5)+(1*6)=186
186 % 10 = 6
So 833485-56-6 is a valid CAS Registry Number.

833485-56-6Downstream Products

833485-56-6Relevant articles and documents

Facile synthesis of regio-isomeric naphthofurans and benzodifurans

Park, Kwanghee Koh,Jeong, Jinsuk

, p. 545 - 553 (2007/10/03)

Naphtho[1,2-b]furans 1a-f, naphtho[2,1-b]furans 2a-f, benzo[1,2-b:5,4- b′]difurans 3a-b, benzo[1,2-b:4,5-b′]difurans 4a-b, and benzo[1,2-b:4,3-b′]difurans 5a-b were synthesized by base-catalyzed cyclization reaction of the corresponding o-alkoxybenzoylarene derivatives. The o-alkoxybenzoylarenes were obtained from the etherification reaction of the o-hydroxybenzoylarenes, which were prepared either by the reaction of methoxyarenes with benzoyl chloride in the presence of aluminum chloride or by photo-Fries rearrangement of aryl benzoates. Graphical Abstract.

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