61557-12-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 61557-12-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,5,5 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 61557-12:
(7*6)+(6*1)+(5*5)+(4*5)+(3*7)+(2*1)+(1*2)=118
118 % 10 = 8
So 61557-12-8 is a valid CAS Registry Number.
InChI:InChI=1/C21H32O5/c1-4-26-15-21(2,3)19(23)14-12-16-11-13-18(22)17(16)9-7-5-6-8-10-20(24)25/h5,7,11-14,16-17,19,23H,4,6,8-10,15H2,1-3H3,(H,24,25)/b7-5-,14-12+/t16-,17+,19+/m0/s1