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111798-08-4

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111798-08-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 111798-08-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,7,9 and 8 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 111798-08:
(8*1)+(7*1)+(6*1)+(5*7)+(4*9)+(3*8)+(2*0)+(1*8)=124
124 % 10 = 4
So 111798-08-4 is a valid CAS Registry Number.

111798-08-4Relevant articles and documents

Synthesis of Phenanthro[9,10-c]thiophenes by 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-Promoted Cyclo-Oxidation

Gao, Han,Connors, David M.,Goroff, Nancy S.

, p. 630 - 633 (2019)

A new method to prepare phenanthro[9,10-c]thiophenes has been developed. In the presence of triflic acid, 3,4-diaryl thiophenes undergo 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)-promoted cyclo-oxidation. NMR and computational studies indicate that p

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