109900-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109900-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,9,0 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 109900-44:
(8*1)+(7*0)+(6*9)+(5*9)+(4*0)+(3*0)+(2*4)+(1*4)=119
119 % 10 = 9
So 109900-44-9 is a valid CAS Registry Number.
109900-44-9Relevant articles and documents
DIENES AS CHIRAL TEMPLATES
Schomburg, Dietmar,Thielmann, Marion,Winterfeldt, Ekkehard
, p. 5833 - 5834 (1986)
Stereoselective and regioselective cycloadditions to the chiral cyclopentadiene 2 are reported.Diastereoselective transformations of the adducts followed by a thermal retroreaction yields pure enantiomers.