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136880-94-9

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136880-94-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 136880-94-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,8,8 and 0 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 136880-94:
(8*1)+(7*3)+(6*6)+(5*8)+(4*8)+(3*0)+(2*9)+(1*4)=159
159 % 10 = 9
So 136880-94-9 is a valid CAS Registry Number.

136880-94-9Downstream Products

136880-94-9Relevant articles and documents

Synthesis and Characterization of 2H-, 3H- and 4H-Azepine: The First Observation of the Thermal Distribution Equilibrium of Azepines

Satake, Kyosuke,Okuda, Ryoichi,Hashimoto, Michiaki,Fujiwara, Yasushi,Watadani, Izumi,et al.

, p. 1154 - 1156 (1991)

Demethoxycarbonylation of methyl 2,5-di-tert-butyl-1H-azepine-1-carboxylate using 1,8-diazabicycloundec-7-ene gives exclusively two isomers of 3H-azepine derivatives, while methyl 3,6-di-tert-butyl-1H-azepine-1-carboxylate gives a mixture of 2H-, 3H- and 4H-azepine derivatives under the same conditions because of a 1,5-hydrogen shift in the resulting triene system.

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