77639-70-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77639-70-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,6,3 and 9 respectively; the second part has 2 digits, 7 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 77639-70:
(7*7)+(6*7)+(5*6)+(4*3)+(3*9)+(2*7)+(1*0)=174
174 % 10 = 4
So 77639-70-4 is a valid CAS Registry Number.
InChI:InChI=1/C15H13N3O2.C6H15NO3/c1-18-9-5-8-13(18)14(19)12(10-16)15(20)17-11-6-3-2-4-7-11;8-4-1-7(2-5-9)3-6-10/h2-9,12H,1H3,(H,17,20);8-10H,1-6H2