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171732-81-3

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171732-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 171732-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,7,3 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 171732-81:
(8*1)+(7*7)+(6*1)+(5*7)+(4*3)+(3*2)+(2*8)+(1*1)=133
133 % 10 = 3
So 171732-81-3 is a valid CAS Registry Number.

171732-81-3Relevant articles and documents

Intramolecular reactions of α-azidocinnamates with 4-substituted 1,3-dienes

Vogel,Delavier,Jones,Doring

, p. 1409 - 1412 (2007/10/02)

The synthesis of new 8,9-benzo-6-aza-bicyclo[3.2.2]nona-3.6.8-trienes 14 by intramolecular reaction of α-azidocinnamates 9 with alkyl- and phenylsubstituted ortho-butadienyl side chains is reported, as is the formation of the new 1-aza-2-carbomethoxy-7,8-benzo-tricyclo[4.30.02,9]nona-4,7-diene 15.

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