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220934-05-4

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220934-05-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220934-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,9,3 and 4 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 220934-05:
(8*2)+(7*2)+(6*0)+(5*9)+(4*3)+(3*4)+(2*0)+(1*5)=104
104 % 10 = 4
So 220934-05-4 is a valid CAS Registry Number.

220934-05-4Relevant articles and documents

Stereocontrolled Synthesis of N-Vinyl-, N-(1'-Propenyl)-, and N-Unsubstituted-β-lactams from 2-Aza-1,3-butadienes via the Staudinger Reaction

Georg, Gunda I.,He, Ping,Kant, Joydeep,Wu, Zhi-jun

, p. 5771 - 5778 (2007/10/02)

2-Aza-1,3-butadienes 2 and 5 were synthesized in good yields and on a large scale.Reaction of 2 and 5 with acid chlorides in the presence of triethylamine (Staudinger reaction) resulted in the high-yielding formation of N-vinyl- and N-(1'-propenyl)-β-lact

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