157643-56-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157643-56-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,4 and 3 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 157643-56:
(8*1)+(7*5)+(6*7)+(5*6)+(4*4)+(3*3)+(2*5)+(1*6)=156
156 % 10 = 6
So 157643-56-6 is a valid CAS Registry Number.
InChI:InChI=1/C13H16O6/c1-4-6(3)19-13(18)8-7(4)5(2)10(14)9(11(8)15)12(16)17/h4,6,13-15,18H,1-3H3,(H,16,17)/t4-,6-,13+/m1/s1
