171896-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 171896-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,8,9 and 6 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 171896-99:
(8*1)+(7*7)+(6*1)+(5*8)+(4*9)+(3*6)+(2*9)+(1*9)=184
184 % 10 = 4
So 171896-99-4 is a valid CAS Registry Number.
171896-99-4Relevant articles and documents
A stereodivergent synthesis of 3,4-disubstituted-2-azetidinones
Collis, Maree P.,Perlmutter, Patrick
, p. 2117 - 2134 (2007/10/03)
The synthesis of a new aminolactone 1, using a highly diastereoselective conjugate addition of benzylamine to the unsaturated lactone 6 derived from D-mannitol, is described. The enantiospecific transformation of this aminolactone into either cis- or tran
