Welcome to LookChem.com Sign In|Join Free

CAS

  • or

406954-91-4

Post Buying Request

406954-91-4 Suppliers

Recommended suppliersmore

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

406954-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 406954-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,6,9,5 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 406954-91:
(8*4)+(7*0)+(6*6)+(5*9)+(4*5)+(3*4)+(2*9)+(1*1)=164
164 % 10 = 4
So 406954-91-4 is a valid CAS Registry Number.

406954-91-4Relevant articles and documents

Amino acid derived heterocycles: Lewis acid catalyzed and radical cyclizations from peptide acetals

Todd, Matthew H.,Ndubaku, Chudi,Bartlett, Paul A.

, p. 3985 - 3988 (2007/10/03)

Bicyclization of peptide acetals via nucleophilic attack of a phenyl group on an endocyclic acyliminium ion 4 was explored as a route to novel amino acid derived heterocycles and peptidomimetic scaffolds. In the presence of protic acid, bridged structures such as 6 are formed readily from phenylalanine derivatives, but the fused-ring analogues 5 could not be obtained in good yield. In contrast, radical cyclization of the bromophenyl dihydropyrazinone 7 provides an effective alternative for the synthesis of 5 (n = 0, 1, 2). Additional versatility in this process was demonstrated by efficient synthesis of a different fused ring system, represented by the antihelmintic praziquantel, 8.

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 406954-91-4