804519-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 804519-91-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,4,5,1 and 9 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 804519-91:
(8*8)+(7*0)+(6*4)+(5*5)+(4*1)+(3*9)+(2*9)+(1*1)=163
163 % 10 = 3
So 804519-91-3 is a valid CAS Registry Number.
804519-91-3Relevant articles and documents
Proline-catalyzed asymmetric aldol reactions of tetrahydro-4H-thiopyran-4- one with aldehydes
Ward, Dale E.,Jheengut, Vishal
, p. 8347 - 8350 (2007/10/03)
Proline-catalyzed enantioselective direct intermolecular aldol reactions of tetrahydro-4H-thiopyran-4-one with various aldehydes give anti adducts with high diastereo- and enantioselectivities in moderate to excellent yields. With the aromatic aldehydes b
