139609-20-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139609-20-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,0 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139609-20:
(8*1)+(7*3)+(6*9)+(5*6)+(4*0)+(3*9)+(2*2)+(1*0)=144
144 % 10 = 4
So 139609-20-4 is a valid CAS Registry Number.
InChI:InChI=1/C21H21N5O10S3.Na/c1-11-13-3-2-12(24-25-22)8-15(13)35-21(31)14(11)9-17(27)23-5-7-38-37-6-4-19(29)36-26-18(28)10-16(20(26)30)39(32,33)34;/h2-3,8,16H,4-7,9-10H2,1H3,(H,23,27)(H,32,33,34);/q;+1/p-1