159757-35-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159757-35-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,7,5 and 7 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 159757-35:
(8*1)+(7*5)+(6*9)+(5*7)+(4*5)+(3*7)+(2*3)+(1*5)=184
184 % 10 = 4
So 159757-35-4 is a valid CAS Registry Number.
159757-35-4Relevant articles and documents
Spiro cyclisations of N-acyliminium ions involving an aromatic π-nucleophile
Bailey, Patrick D.,Morgan, Keith M.,Smith, David I.,Vernon, John M.
, p. 3369 - 3378 (2007/10/03)
Spiro 2-pyrrolidin-5-ones were obtained from N-substituted succinimides by a two-step procedure, involving 5- or 6-endo-trig cyclisation of N-acyliminium ion intermediates with a tethered aromatic π-nucleophile.
