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123316-16-5

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123316-16-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123316-16-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,3,1 and 6 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 123316-16:
(8*1)+(7*2)+(6*3)+(5*3)+(4*1)+(3*6)+(2*1)+(1*6)=85
85 % 10 = 5
So 123316-16-5 is a valid CAS Registry Number.

123316-16-5Downstream Products

123316-16-5Relevant articles and documents

REGIOSPECIFIC 2+2 PHOTOADDITION OF PHENYL SUBSTITUTED ACETYLENES TO PENTAFLUOROPYRIDINE

Sket, Boris,Zupan, Marko

, p. 1755 - 1758 (2007/10/02)

Irradiation of a cyclohexane solution of pentafluoropyridine and 1-phenyl-2-alkyl-acetylenes produced regiospecific 2+2 photocycloaddition, thus forming 3-aza-bicyclo octa-2,4,7-triene derivatives, which further phototransformed to 7-aza-tricyclo2,5>octa-3,7-diene derivatives.Further phototransformation of the tricyclic system depended on the alkyl substituent: in the case of tert-butyl, 1,2,5,6,7-pentafluoro-3-tert-butyl-4-phenyl-8-aza-bicycloocta-2,4,7-triene was formed, while in the case of a methyl substituent, 1-methyl-2,3,5,6,7-pentafluoro-8-phenyl-4-aza cycloocta-1,3,5,7-tetraene resulted.

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