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20176-53-8

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20176-53-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20176-53-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,1,7 and 6 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 20176-53:
(7*2)+(6*0)+(5*1)+(4*7)+(3*6)+(2*5)+(1*3)=78
78 % 10 = 8
So 20176-53-8 is a valid CAS Registry Number.

20176-53-8Relevant articles and documents

Paracyclophane-10-enes and Paracyclophane-10,27-dienes: A Convenient Synthesis by the McMurry Reaction and Dynamic Stereochemistry

Gruetzmacher, Hans-Friedrich,Neumann, Ekkehard,Ebmeyer, Frank,Albrecht, Karsten,Schelenz, Peter

, p. 2291 - 2298 (2007/10/02)

The 1,3-bis(4-acylphenyl)propanes 2, 3, 9, 12, and 15 were subjected to a cyclization by reductive coupling with low-valent titanium (McMurry reaction). 2 and 3 are converted into the corresponding 10,11-dialkylparacyclophane-10-enes 4 and 5, respect

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