2,2,7,7-tetraacetoxy-3,6-di(4-tolyl)-1-oxa-3,4,5,6,8-pentaza-2,7-dibora-1,2,7,8-tetrahydronaphthalene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 137779-56-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,7 and 9 respectively; the second part has 2 digits, 5 and 6 respectively. Calculate Digit Verification of CAS Registry Number 137779-56: (8*1)+(7*3)+(6*7)+(5*7)+(4*7)+(3*9)+(2*5)+(1*6)=177 177 % 10 = 7 So 137779-56-7 is a valid CAS Registry Number.