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(2'E,6'E,10'E)-2-Methyl-3-(1'-hydroxy-3',7',11',15'-tetramethyl-2',6',10',14'-hexadecatetraenyl)-1,4-dimethoxynaphthalene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

156840-09-4

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156840-09-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156840-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,8,4 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 156840-09:
(8*1)+(7*5)+(6*6)+(5*8)+(4*4)+(3*0)+(2*0)+(1*9)=144
144 % 10 = 4
So 156840-09-4 is a valid CAS Registry Number.

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