Welcome to LookChem.com Sign In|Join Free

CAS

  • or

143121-61-3

Post Buying Request

143121-61-3 Suppliers

Recommended suppliersmore

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

143121-61-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143121-61-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,1,2 and 1 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 143121-61:
(8*1)+(7*4)+(6*3)+(5*1)+(4*2)+(3*1)+(2*6)+(1*1)=83
83 % 10 = 3
So 143121-61-3 is a valid CAS Registry Number.

143121-61-3Relevant articles and documents

Lobocyclamide B from Lyngbya confervoides. Configuration and Asymmetric Synthesis of β-Hydroxy-α-amino Acids by (-)-Sparteine-Mediated Aldol Addition

MacMillan, John B.,Molinski, Tadeusz F.

, p. 1883 - 1886 (2002)

(Matrix Presented) Lobocyclamide B, a cyclododecapeptide containing five β-hydroxy-α-amino acid residues, was isolated from Lyngbya confervoides. This is the first reported occurrence of γ-hydroxythreonine in a natural peptide. Optically active β-hydroxy-α-amino acids required for configurational analysis of the title compound were prepared using a novel (-)-sparteine-mediated asymmetric aldol addition of N-(diphenylmethylene)glycine tert-butyl ester to aldehydes. The method is general for aliphatic and aryl aldehydes and notable for operational simplicity.

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 143121-61-3