204587-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204587-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,5,8 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 204587-91:
(8*2)+(7*0)+(6*4)+(5*5)+(4*8)+(3*7)+(2*9)+(1*1)=137
137 % 10 = 7
So 204587-91-7 is a valid CAS Registry Number.
InChI:InChI=1/C8H17NO3/c1-5(9)6(10)7(11)12-8(2,3)4/h5-6,10H,9H2,1-4H3/p+1/t5-,6-/m1/s1