2l4-2,2'-Spirobi[1,3,2-benzodioxatellurole],
4,4',6,6'-tetrakis(1,1-dimethylethyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 72954-72-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,9,5 and 4 respectively; the second part has 2 digits, 7 and 2 respectively. Calculate Digit Verification of CAS Registry Number 72954-72: (7*7)+(6*2)+(5*9)+(4*5)+(3*4)+(2*7)+(1*2)=154 154 % 10 = 4 So 72954-72-4 is a valid CAS Registry Number.
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4,4',6,6'-tetrakis(1,1-dimethylethyl)-