Welcome to LookChem.com Sign In|Join Free

CAS

  • or

157399-43-4

Post Buying Request

157399-43-4 Suppliers

Recommended suppliersmore

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

157399-43-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157399-43-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,3,9 and 9 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 157399-43:
(8*1)+(7*5)+(6*7)+(5*3)+(4*9)+(3*9)+(2*4)+(1*3)=174
174 % 10 = 4
So 157399-43-4 is a valid CAS Registry Number.

157399-43-4Relevant articles and documents

Synthetic Applications of 2-(1,3-Dithian-2-yl)indoles. IV. New Synthesis of the Tetracyclic ABED Ring System of Strychnos Alkaloids

Diez, Anna,Castells, Josep,Forns, Pilar,Rubiralta, Mario,Grierson, David S.,et al.

, p. 6585 - 6602 (1994)

A new and versatile synthesis of tetracyclic compounds 10, 22 and 24 presenting the ABED ring system of Strychnos alkaloids is described by closure of the C1-C11b bond in the key step.The intermediate tetrahydropyridinium salts 2 have been obtained from 2-(1,3-dithian-2-yl)indole (3) and either 2-cyano-3-ethyl-1-methyl-1,2,3,6-tetrahydropyridine (4a) or N-substituted Δ3-piperidein-2-ones (5).

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 157399-43-4