66842-21-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 66842-21-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,4 and 2 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 66842-21:
(7*6)+(6*6)+(5*8)+(4*4)+(3*2)+(2*2)+(1*1)=145
145 % 10 = 5
So 66842-21-5 is a valid CAS Registry Number.
66842-21-5Relevant articles and documents
Preparation of Optically Pure Pyridyl-1-ethanols
Seemayer, Robert,Schneider, Manfred P.
, p. 827 - 830 (1992)
Using a highly enantioselective lipase from Pseudomonas sp. (SAM II) all enantiomers of the isomeric pyridyl-1-ethanols (R)- and (S)- 1 - 3 were prepared in optically pure form both by enzymatic hydrolysis and esterification.