1191-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1191-20-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,9 and 1 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1191-20:
(6*1)+(5*1)+(4*9)+(3*1)+(2*2)+(1*0)=54
54 % 10 = 4
So 1191-20-4 is a valid CAS Registry Number.
InChI:InChI=1/C41H62O2/c1-34(23-15-26-37(4)28-17-25-36(3)22-13-14-32-40(7,8)42)20-11-12-21-35(2)24-16-27-38(5)29-18-30-39(6)31-19-33-41(9,10)43/h11-13,15-17,20-28,30,42-43H,14,18-19,29,31-33H2,1-10H3/b12-11+,22-13+,23-15+,24-16+,28-17+,34-20+,35-21+,36-25+,37-26+,38-27+,39-30+