21887-06-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21887-06-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,8 and 7 respectively; the second part has 2 digits, 0 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 21887-06:
(7*2)+(6*1)+(5*8)+(4*8)+(3*7)+(2*0)+(1*6)=119
119 % 10 = 9
So 21887-06-9 is a valid CAS Registry Number.
InChI:InChI=1/C24H28O5/c1-22-9-7-19-20(4-3-16-12-17(26)6-10-23(16,19)14-25)24(22,28)11-8-18(22)15-2-5-21(27)29-13-15/h2,5,12-14,18-20,28H,3-4,6-11H2,1H3/t18-,19+,20-,22-,23-,24+/m1/s1