6638-02-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 6638-02-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,3 and 8 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 6638-02:
(6*6)+(5*6)+(4*3)+(3*8)+(2*0)+(1*2)=104
104 % 10 = 4
So 6638-02-4 is a valid CAS Registry Number.
InChI:InChI=1/C37H36N2O6S2/c1-3-38(26-28-10-8-14-35(24-28)46(40,41)42)33-20-16-31(17-21-33)37(30-12-6-5-7-13-30)32-18-22-34(23-19-32)39(4-2)27-29-11-9-15-36(25-29)47(43,44)45/h5-25H,3-4,26-27H2,1-2H3,(H-,40,41,42,43,44,45)