28849-57-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 28849-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,8,4 and 9 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 28849-57:
(7*2)+(6*8)+(5*8)+(4*4)+(3*9)+(2*5)+(1*7)=162
162 % 10 = 2
So 28849-57-2 is a valid CAS Registry Number.
InChI:InChI=1/C33H32N4O5.2Cu/c1-6-17-10-18-11-25-19(7-2)14(3)21(35-25)12-22-15(4)20(8-9-26(38)39)30(36-22)28-29(33(41)42)32(40)27-16(5)23(37-31(27)28)13-24(17)34-18;;/h7,10-13,15,20,29H,2,6,8-9H2,1,3-5H3,(H4,34,35,36,37,38,39,40,41,42);;/q;2*+2/p-4