71720-90-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71720-90-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,2 and 0 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 71720-90:
(7*7)+(6*1)+(5*7)+(4*2)+(3*0)+(2*9)+(1*0)=116
116 % 10 = 6
So 71720-90-6 is a valid CAS Registry Number.
InChI:InChI=1/C20H12Cl3N5O10S3.3Na/c21-16-18(22)25-20(23)26-19(16)24-9-2-4-13(40(33,34)35)11(6-9)27-28-17-12(29)3-1-8-5-10(39(30,31)32)7-14(15(8)17)41(36,37)38;;;/h1-7,29H,(H,24,25,26)(H,30,31,32)(H,33,34,35)(H,36,37,38);;;/q;3*+1/p-3