4-Oxo-pentanoic acid (2R,3S,3aR,9aR)-2-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-5,5,7,7-tetraisopropyl-tetrahydro-1,4,6,8-tetraoxa-5,7-disila-cyclopentacycloocten-3-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 194031-41-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,0,3 and 1 respectively; the second part has 2 digits, 4 and 1 respectively. Calculate Digit Verification of CAS Registry Number 194031-41: (8*1)+(7*9)+(6*4)+(5*0)+(4*3)+(3*1)+(2*4)+(1*1)=119 119 % 10 = 9 So 194031-41-9 is a valid CAS Registry Number.
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