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127680-28-8

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127680-28-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 127680-28-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,7,6,8 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 127680-28:
(8*1)+(7*2)+(6*7)+(5*6)+(4*8)+(3*0)+(2*2)+(1*8)=138
138 % 10 = 8
So 127680-28-8 is a valid CAS Registry Number.

127680-28-8Downstream Products

127680-28-8Relevant articles and documents

The halogen-lithium exchange reaction of 3,3-dichloro-2-azetidinones: Application to the synthesis of cis-4-aryl-3-chloro-2-azetidinones

Dejaegher, Yves,Denolf, Bram,Stevens, Christian V.,De Kimpe, Norbert

, p. 193 - 198 (2005)

A straightforward synthesis of new cis-4-aryl-3-chloro-2-azetidinones was developed, using a halogen-lithium exchange reaction on 4-aryl-3,3-dichloro-2- azetidinones. This methodology was further extended to the use of alkyl halides as electrophiles, while more complex electrophiles could not be introduced.

Aziridines as templates: A general strategy for the stereospecific synthesis of 2-azetidinones

Sharma,Kanwar, Seema,Rajpoot, Shivani

, p. 11 - 19 (2007/10/03)

Various routes to a variety of azridine-2-carboxylates have been described and the stereochemistry of these compounds has been determined by spectroscopic methods. Further, greater diversity of β-lactams via ring expansion of these azridines-2-carboxylates were obtained by a general, efficient and direct stereospecific approach.

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