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159652-56-9

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159652-56-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 159652-56-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,6,5 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 159652-56:
(8*1)+(7*5)+(6*9)+(5*6)+(4*5)+(3*2)+(2*5)+(1*6)=169
169 % 10 = 9
So 159652-56-9 is a valid CAS Registry Number.

159652-56-9Downstream Products

159652-56-9Relevant articles and documents

Racemic N1-norphenserine and its enantiomers: Unpredicted inhibition of human acetyl- and butyrylcholinesterase and β-amyloid precursor protein in vitro

Yu, Qian-Sheng,Luo, Weiming,Holloway, Harold W.,Utsuki, Tada,Perry, Tracy Ann,Lahiri, Debomoy K.,Greig, Nigel H.,Brossi, Arnold

, p. 529 - 539 (2007/10/03)

The optically pure enantiomers of N1-norphenserine (15, 16) were synthesized and its racemate 17 was prepared by mixing equal parts of each enantiomer. (-)-N1-Norphenserine (15) was prepared by partial synthesis initiated from the natural product, (-)-physostigmine (1). (+)-N 1-Norphenserine (16) was prepared by total synthesis using the Julian oxindole route, with modifications. The in vitro inhibitory activities of 15-17 were quantified against human erythrocyte AChE and plasma BChE as well as against human neuroblastoma cell β-amyloid precursor protein secretion in cell culture. All were active. Racemic compound (17) with a high AChE and β-amyloid precursor protein inhibitory action may warrant further assessment in Alzheimer's disease models.

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