20556-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20556-89-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,5 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 20556-89:
(7*2)+(6*0)+(5*5)+(4*5)+(3*6)+(2*8)+(1*9)=102
102 % 10 = 2
So 20556-89-2 is a valid CAS Registry Number.
InChI:InChI=1/2C11H14O2.2C4H9.Sn/c2*1-11(2,3)9-6-4-8(5-7-9)10(12)13;2*1-3-4-2;/h2*4-7H,1-3H3,(H,12,13);2*1,3-4H2,2H3;/r2C11H14O2.C8H18Sn/c2*1-11(2,3)9-6-4-8(5-7-9)10(12)13;1-3-5-7-9-8-6-4-2/h2*4-7H,1-3H3,(H,12,13);3-8H2,1-2H3