153499-20-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 153499-20-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,4,9 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 153499-20:
(8*1)+(7*5)+(6*3)+(5*4)+(4*9)+(3*9)+(2*2)+(1*0)=148
148 % 10 = 8
So 153499-20-8 is a valid CAS Registry Number.
153499-20-8Relevant articles and documents
Synthetic Nitrogen Carotenoids: Optically Active Carotenoid Amines
Sliwka, Hans-Richard,Liaaen-Jensen, Synnove
, p. 2377 - 2382 (1993)
(3R,3'R)-Zeaxanthin was reacted with hydrazoic acid in a Mitsonobu reaction to yield azides with inverted configuration.Reduction of these azides with hydrogen telluride provided (3S)-2',3'-didehydro-β,β-caroten-3-amine, (3R,3'S)-3'-amino-β,β-caroten-3-ol
