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128822-05-9

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128822-05-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128822-05-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,2 and 2 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 128822-05:
(8*1)+(7*2)+(6*8)+(5*8)+(4*2)+(3*2)+(2*0)+(1*5)=129
129 % 10 = 9
So 128822-05-9 is a valid CAS Registry Number.

128822-05-9Downstream Products

128822-05-9Relevant articles and documents

STEREOSELECTIVITIES OF THERMAL AND LEWIS ACID CATALYZED INTRAMOLECULAR DIELS-ALDER REACTIONS OF INTERNALLY ACTIVATED DIENOPHILES TO FORM 5-11 MEMBERED RINGS

Smith, Douglas A.,Sakan, Kunio,Houk, K.N.

, p. 4877 - 4880 (2007/10/02)

The thermal and Lewis acid catalyzed intramolecular Diels-Alder reactions of 1 (n = 5-11) have been studied.The catalyzed reactions effeciently form 7-11 membered rings and produce mainly cis adducts.Lewis acids prevent the five-membered ring forming reaction.

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