(2R,3R,3aS,9aR)-5,5,7,7-Tetraisopropyl-2-(5-nitro-indol-1-yl)-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 742087-72-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,2,0,8 and 7 respectively; the second part has 2 digits, 7 and 2 respectively. Calculate Digit Verification of CAS Registry Number 742087-72: (8*7)+(7*4)+(6*2)+(5*0)+(4*8)+(3*7)+(2*7)+(1*2)=165 165 % 10 = 5 So 742087-72-5 is a valid CAS Registry Number.
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