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5-Ethoxy-6,6,7,7-tetramethyl-2,4-bis-(4-nitro-phenyl)-1,3-diaza-bicyclo[3.2.0]hept-2-ene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128694-27-9

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128694-27-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128694-27-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,9 and 4 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128694-27:
(8*1)+(7*2)+(6*8)+(5*6)+(4*9)+(3*4)+(2*2)+(1*7)=159
159 % 10 = 9
So 128694-27-9 is a valid CAS Registry Number.

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