20305-51-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 20305-51-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,3,0 and 5 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20305-51:
(7*2)+(6*0)+(5*3)+(4*0)+(3*5)+(2*5)+(1*1)=55
55 % 10 = 5
So 20305-51-5 is a valid CAS Registry Number.
InChI:InChI=1/C34H50O4/c1-5-9-11-13-15-17-33(35)37-29-23-19-27(20-24-29)31(7-3)32(8-4)28-21-25-30(26-22-28)38-34(36)18-16-14-12-10-6-2/h19-26,31-32H,5-18H2,1-4H3