157544-85-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157544-85-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,5,4 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 157544-85:
(8*1)+(7*5)+(6*7)+(5*5)+(4*4)+(3*4)+(2*8)+(1*5)=159
159 % 10 = 9
So 157544-85-9 is a valid CAS Registry Number.
157544-85-9Relevant articles and documents
Total asymmetric synthesis of 3-amino-3-deoxy-L-talose and derivatives
Hunenberger,Allemann,Vogel
, p. 175 - 187 (2007/10/02)
(1R,2R,4R)-2-exo-Cyano-7-oxabicyclo[2.2.1]hept-5-en-2-yl (1S')-camphanate [(+)-1, Diels-Alder adduct of furan to 1-cyanovinyl (1S)-camphanate] was transformed with high stereoselectivity into (1R,2R,6R,7R)-4-phenyl-3,10-dioxa-5-azatricyclo[5.2.1.02,6