2203-01-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2203-01-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,0 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 2203-01:
(6*2)+(5*2)+(4*0)+(3*3)+(2*0)+(1*1)=32
32 % 10 = 2
So 2203-01-2 is a valid CAS Registry Number.
InChI:InChI=1/C27H25N5O4S2/c1-4-31(13-14-32-25(33)20-7-5-6-8-21(20)26(32)34)18-9-11-22(17(2)15-18)29-30-27-28-23-12-10-19(38(3,35)36)16-24(23)37-27/h5-12,15-16H,4,13-14H2,1-3H3/b30-29+