70209-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70209-90-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,2,0 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 70209-90:
(7*7)+(6*0)+(5*2)+(4*0)+(3*9)+(2*9)+(1*0)=104
104 % 10 = 4
So 70209-90-4 is a valid CAS Registry Number.
InChI:InChI=1/C48H35N9O19S4.5Na/c1-76-39-22-36(55-54-35-12-8-27(19-40(35)79(70,71)72)50-46(60)24-5-3-7-28(15-24)52-53-29-9-13-38(58)34(18-29)48(62)63)33-20-30(77(64,65)66)10-11-32(33)43(39)56-57-44-41(80(73,74)75)17-25-16-31(78(67,68)69)21-37(42(25)45(44)59)51-47(61)23-4-2-6-26(49)14-23;;;;;/h2-22,58-59H,49H2,1H3,(H,50,60)(H,51,61)(H,62,63)(H,64,65,66)(H,67,68,69)(H,70,71,72)(H,73,74,75);;;;;/q;5*+1/p-5