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4,19-bis-(toluene-4-sulfonyl)-10,13,25,28,33,36,41,44-octaoxa-1,4,7,16,19,22-hexaaza-tricyclo[20.8.8.87,16]hexatetracontane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

42031-83-4

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42031-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 42031-83-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,0,3 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 42031-83:
(7*4)+(6*2)+(5*0)+(4*3)+(3*1)+(2*8)+(1*3)=74
74 % 10 = 4
So 42031-83-4 is a valid CAS Registry Number.

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