Cas 20023-45-4,Cyclohexane, 1-hexenylidene-

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Check Digit Verification of cas no

The CAS Registry Mumber 20023-45-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,0,2 and 3 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 20023-45:
(7*2)+(6*0)+(5*0)+(4*2)+(3*3)+(2*4)+(1*5)=44
44 % 10 = 4
So 20023-45-4 is a valid CAS Registry Number.

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20023-45-4Relevant articles and documents

The synthesis of allenes by Cu(i)-catalyzed regio- and stereoselective reduction of propargylic carbonates with hydrosilanes

Zhong, Chongmin,Sasaki, Yusuke,Ito, Hajime,Sawamura, Masaya

supporting information; experimental part, p. 5850 - 5852 (2010/01/31)

Cu(i)-catalyzed anti-SN2′-type reduction of internal propargylic carbonates with hydrosilanes affords various di- and trisubstituted allenes with high regioselectivities; the reactions are compatible with functional groups and work efficiently

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20023-45-4