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65426-43-9

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65426-43-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 65426-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,5,4,2 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 65426-43:
(7*6)+(6*5)+(5*4)+(4*2)+(3*6)+(2*4)+(1*3)=129
129 % 10 = 9
So 65426-43-9 is a valid CAS Registry Number.

65426-43-9Upstream product

65426-43-9Downstream Products

65426-43-9Relevant articles and documents

Preparation, Characterization, and Flash Vacuum Pyrolysis of Dibenzoxathiin 6-Oxide (Biphenylene Sultine)

Squires, Thomas G.,Venier, Clifford G.,Hodgson, Brian A.,Chang, Laurence W.,Davis, Franklin A.,Panunto, Thomas W.

, p. 2373 - 2376 (1981)

Dibenzoxathiin 6-oxide (2), previously proposed as an intermediate in the pyrolysis of dibenzothiophene 5,5-dioxide (1), has been prepared by the treatment of 1 with KOH in the presence of crown ether followed by an acid workup.The likely intermediacy of the dipotassium salt of 2-(2-hydroxyphenyl)benzenesulfinic acid is demonstrated.Flash pyrolysis of 2 gives dibenzofuran and dibenzothiophene in essentiallly the same ratio as when they are formed in the pyrolysis of 1, suggesting that both products arise from the intermediacy of 2.

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