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1020112-31-5

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1020112-31-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1020112-31-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,2,0,1,1 and 2 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1020112-31:
(9*1)+(8*0)+(7*2)+(6*0)+(5*1)+(4*1)+(3*2)+(2*3)+(1*1)=45
45 % 10 = 5
So 1020112-31-5 is a valid CAS Registry Number.

1020112-31-5Relevant articles and documents

An unexpected cyclization discovered during the synthesis of 8-substituted purines from a 4,5-diaminopyrimidine

Dang, Qun,Rydzewski, Robert M.,Cashion, Daniel K.,Erion, Mark D.

, p. 2143 - 2145 (2008)

Attempted conversion of 4-chloro-5-(N-4-bromobutanoyl)amino-6-phenethylaminopyrimidine (2) to 6-chloro-8-[1-(3-bromo)propyl]-9-phenethylpurine (1) under standard cyclization conditions did not give the targeted product. Instead, an unexpected cyclization

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