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(1S,4aR,4bS,8aS,10aR)-1-[(3E,7E)-9-(tert-Butyl-diphenyl-silanyloxy)-3,7-dimethyl-nona-3,7-dienyl]-2,4b,8,8,10a-pentamethyl-tetradecahydro-phenanthren-2-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

117638-20-7

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117638-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117638-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,3 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 117638-20:
(8*1)+(7*1)+(6*7)+(5*6)+(4*3)+(3*8)+(2*2)+(1*0)=127
127 % 10 = 7
So 117638-20-7 is a valid CAS Registry Number.

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