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133504-99-1

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133504-99-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133504-99-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,5,0 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133504-99:
(8*1)+(7*3)+(6*3)+(5*5)+(4*0)+(3*4)+(2*9)+(1*9)=111
111 % 10 = 1
So 133504-99-1 is a valid CAS Registry Number.

133504-99-1Relevant articles and documents

A novel, general, totally stereoselective one-pot synthesis of cis-3-substituted 4-formylazetidin-2-ones

Alcaide,Martin-Cantalejo,Plumet,Rodriguez-Lopez,Sierra

, p. 803 - 806 (1991)

A general, totally stereoselective one-pot synthesis of cis-3-substituted-4-formylazetidin-2-ones based upon the reaction of acid chlorides and 1,4-bis-(4-methoxyphenyl)-1,4-diazabuta-1,3-diene, as synthetic equivalent of the corresponding unknown α-formy

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