72639-33-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72639-33-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,6,3 and 9 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 72639-33:
(7*7)+(6*2)+(5*6)+(4*3)+(3*9)+(2*3)+(1*3)=139
139 % 10 = 9
So 72639-33-9 is a valid CAS Registry Number.
InChI:InChI=1/C26H20ClN5O13S4.3K/c1-10-21(27)25(32-26(29-10)46(2,35)36)31-14-7-13(16(47(37,38)39)9-17(14)48(40,41)42)30-15-8-18(49(43,44)45)22(28)20-19(15)23(33)11-5-3-4-6-12(11)24(20)34;;;/h3-9,30H,28H2,1-2H3,(H,29,31,32)(H,37,38,39)(H,40,41,42)(H,43,44,45);;;/q;3*+1/p-3