Cas 137552-56-8,6-oxo-6-phenyl-6-phosphapentacyclo<6.3.1.02,4.03,7.05,10>dodecane

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Check Digit Verification of cas no

The CAS Registry Mumber 137552-56-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,5 and 2 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 137552-56:
(8*1)+(7*3)+(6*7)+(5*5)+(4*5)+(3*2)+(2*5)+(1*6)=138
138 % 10 = 8
So 137552-56-8 is a valid CAS Registry Number.

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137552-56-8Relevant academic research and scientific papers

Chelotropic Reactions of Tricyclo4,9>undeca-2,5-diene with Dichlorophosphines. Synthesis of Novel Phosphapolycycles

Toda, Mitsuo,Miyahara, Ikuko,Hirotsu, Ken,Yamaguchi, Ryohei,Kozima, Shinpei,Matsumoto, Kiyoshi

, p. 1677 - 1678 (2007/10/02)

The chelotropic reaction of dichlorophosphines to tricyclo4,9>undeca-2,5-diene, followed by hydrolysis with water gave 6-substituted-6-oxo-6-phosphapentacyclo2,4.03,7.05,10>dodecanes whose structures were established by an X-ray crystallography.

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