83455-89-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83455-89-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,4,5 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83455-89:
(7*8)+(6*3)+(5*4)+(4*5)+(3*5)+(2*8)+(1*9)=154
154 % 10 = 4
So 83455-89-4 is a valid CAS Registry Number.
83455-89-4Relevant articles and documents
THE SYNTHESIS OF (-)-ISORETRONECANOL, (-)-TRACHELANTHAMIDINE, AND (-)-SUPINIDINE FROM (S)-PROLINE
Rueeger, Heinrich,Benn, Michael
, p. 1677 - 1680 (2007/10/02)
Dieckmann cyclisation of (S)-N,2-di(carboethoxymethyl)pyrrolidine, made from (S)-proline, gave (8S)-1-carboethoxypyrrolizidin-2-one, which was then converted into (-)-isoretronecanol, (-)-trachelanthamidine, and (-)-supinidine.