[(2R,3R,3aR,9aR)-2-(4,6-Difluoro-benzoimidazol-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yloxy]-acetic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 689221-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,9,2,2 and 1 respectively; the second part has 2 digits, 9 and 7 respectively. Calculate Digit Verification of CAS Registry Number 689221-97: (8*6)+(7*8)+(6*9)+(5*2)+(4*2)+(3*1)+(2*9)+(1*7)=204 204 % 10 = 4 So 689221-97-4 is a valid CAS Registry Number.
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