141993-18-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 141993-18-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,1,9,9 and 3 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 141993-18:
(8*1)+(7*4)+(6*1)+(5*9)+(4*9)+(3*3)+(2*1)+(1*8)=142
142 % 10 = 2
So 141993-18-2 is a valid CAS Registry Number.
141993-18-2Relevant articles and documents
Optically pure, crystalline 'acetate'-aldols from Nacetylbornane-10,2-sultam
Oppolzer, Wolfgang,Starkemann, Christian
, p. 2439 - 2442 (1992)
O-Silylation of N-acetylsultam 2 gives O-silyl-N,O-ketene acetal 3 which undergoes TiCl4 promoted addition to aromatic and aliphatic aldehydes to afford, after flash chromatography, diastereomerically pure, crystalline aldols 5 which are readil