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(8E,11E,13E,18E)-(4S,5R,15S,16R,17R)-4,8,12,16-Tetramethyl-3-oxo-15,17,20-tris-triethylsilanyloxy-5-trimethylsilanyloxy-icosa-8,11,13,18-tetraenoic acid tert-butyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

431900-92-4

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431900-92-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 431900-92-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,1,9,0 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 431900-92:
(8*4)+(7*3)+(6*1)+(5*9)+(4*0)+(3*0)+(2*9)+(1*2)=124
124 % 10 = 4
So 431900-92-4 is a valid CAS Registry Number.

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