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90047-78-2

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90047-78-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90047-78-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,0,4 and 7 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 90047-78:
(7*9)+(6*0)+(5*0)+(4*4)+(3*7)+(2*7)+(1*8)=122
122 % 10 = 2
So 90047-78-2 is a valid CAS Registry Number.

90047-78-2Relevant articles and documents

Cyclizations of ω-Allenyl Radicals

Apparu, Marcel,Crandall, Jack K.

, p. 2125 - 2130 (2007/10/02)

Allenyl halides of structure (CH3)2C=C=CH(CH2)nX with n=3-6 have been prepared and reacted with n-Bu3SnH to generate the corresponding radicals for examination of the cyclization reactions of these reactive intermediates.The observed hydrocarbon products indicate that cyclization occurs for the n=3,4, and 5 radicals but not for the n=6 species.The n=3 radical isomerizes very efficiently by intramolecular addition to the sp carbon of the allene group.The n=5 intermediate reacts relatively slowly by attack at the near sp2 carbon.Both cyclization modes are observed for the n=4 species.The details of these radical cyclizations are discussed.

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