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42502-56-7

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42502-56-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42502-56-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,5,0 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 42502-56:
(7*4)+(6*2)+(5*5)+(4*0)+(3*2)+(2*5)+(1*6)=87
87 % 10 = 7
So 42502-56-7 is a valid CAS Registry Number.

42502-56-7Relevant articles and documents

Convenient Approaches to Ketals from Phthalide: Monosubstituted Isobenzofurans

Tobia, David,Baranski, Joel,Rickborn, Bruce

, p. 4253 - 4256 (2007/10/02)

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