134954-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134954-21-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,9,5 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 134954-21:
(8*1)+(7*3)+(6*4)+(5*9)+(4*5)+(3*4)+(2*2)+(1*1)=135
135 % 10 = 5
So 134954-21-5 is a valid CAS Registry Number.
InChI:InChI=1/C20H24O7/c1-6-10(2)16(22)25-19(5)13(21)9-12-11(3)17(23)24-14(12)15-18(4)7-8-20(15,19)27-26-18/h6-8,12-15,21H,3,9H2,1-2,4-5H3/b10-6+/t12-,13+,14-,15?,18+,19+,20?/m0/s1