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142039-57-4

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142039-57-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142039-57-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,3 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 142039-57:
(8*1)+(7*4)+(6*2)+(5*0)+(4*3)+(3*9)+(2*5)+(1*7)=104
104 % 10 = 4
So 142039-57-4 is a valid CAS Registry Number.

142039-57-4Relevant articles and documents

Amide cuprate reagents as a new class of nitrogen nucleophiles. Application to asymmetric synthesis of β-lactams

Yamamoto,Asao,Uyehara

, p. 5427 - 5429 (2007/10/02)

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