137109-45-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137109-45-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,0 and 9 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 137109-45:
(8*1)+(7*3)+(6*7)+(5*1)+(4*0)+(3*9)+(2*4)+(1*5)=116
116 % 10 = 6
So 137109-45-6 is a valid CAS Registry Number.
InChI:InChI=1/C20H20O7/c1-20(2)12-6-13(23)8(7-21)3-10(12)16-17(25)11-4-9(22)5-14(24)15(11)18(26)19(16)27-20/h3-5,10,12-13,21-24H,6-7H2,1-2H3/t10-,12+,13+/m1/s1