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176040-34-9

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176040-34-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 176040-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,0,4 and 0 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 176040-34:
(8*1)+(7*7)+(6*6)+(5*0)+(4*4)+(3*0)+(2*3)+(1*4)=119
119 % 10 = 9
So 176040-34-9 is a valid CAS Registry Number.

176040-34-9Downstream Products

176040-34-9Relevant articles and documents

An efficient route to the pyrrolizidine ring system via an N-acyl anion cyclisation process

Murray, Anthony,Proctor, George R.,Murray, P. John

, p. 3757 - 3766 (2007/10/03)

An enantioselective route to the pyrrolizidine ring system has been developed which uses an N-acyl anion cyclisation reaction as the key step. This methodology has provided the natural pyrrolizidines (-)-(1R, 8S)-1-hydroxy-pyrrolizidine 7, (-)-pyrrolizidin-1-ene-3-one 9 and (±)-trachelanthamidine 14. Extension of the process to an N-propionyl substrate provides ready access to a series of 2-methyl pyrrolizidines.

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