194228-05-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 194228-05-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,2,2 and 8 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 194228-05:
(8*1)+(7*9)+(6*4)+(5*2)+(4*2)+(3*8)+(2*0)+(1*5)=142
142 % 10 = 2
So 194228-05-2 is a valid CAS Registry Number.
194228-05-2Relevant articles and documents
Asymmetric synthesis of the alkaloid 2,6-disubstituted piperidin-3-ols, (-)-cassine and (+)-spectaline
Momose,Toyooka
, p. 5785 - 5786 (1993)
The asymmetric total synthesis of (-)-cassine (1) and (+)-spectaline (2) was achieved by starting with both enantiomers of the homochiral 3-oxygenated 2,6-cis-disubstituted piperidine 3.
