Welcome to LookChem.com Sign In|Join Free

CAS

  • or

112790-57-5

Post Buying Request

112790-57-5 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

112790-57-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 112790-57-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,2,7,9 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 112790-57:
(8*1)+(7*1)+(6*2)+(5*7)+(4*9)+(3*0)+(2*5)+(1*7)=115
115 % 10 = 5
So 112790-57-5 is a valid CAS Registry Number.

112790-57-5Relevant articles and documents

Synthesis of optically pure 2-azetidinones having N-dehydroamino acid side-chains

Alcaide, Benito,Polanco, Concepción,Sierra, Miguel A.

, p. 416 - 418 (2007/10/03)

An efficient, three step synthesis of optically pure N-vinyl-2-azetidinones 1 starting from α- or β-amino ester imines has been developed. Stau?dinger reaction between amino ester derived imines and ketene precursors gave 2-azetidinones 2. Enolate formati

New aspects of β-lactam chemistry: β-lactams as chiral building blocks

Ojima, Iwao,Shimizu, Nobuko,Qiu, Xiaogang,Chen, Hauh-Jyun C.,Nakahashi, Kazuaki

, p. 649 - 658 (2007/10/02)

Recent advances on the new aspects of β-lactam chemistry in which β-lactams are used as chiral building blocks for the synthesis of a variety of α-amino acids, 4α-alkyl-α-aminoacids, oligopeptides, labeled peptides, azetidines, amino alcohols, etc., are reviewed.The topics include new and effective routes to dipeptides via homochiral β-lactams obtained by extremely stereoselective cycloadditions of chiral ketenes to chiral imines, a novel route to labeled peptides through extremely stereoselective and stereospecific reductive cleavage of β-lactams on a palladium catalyst, and new efficient syntheses of α-alkyl-α-amino acids and their peptides by the highly effective asymmetric alkylations of β-lactam lithium enolates followed by hydrogenolysis or Birch reduction.Mechanism of those highly selective unique reactions are discussed.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 112790-57-5