Welcome to LookChem.com Sign In|Join Free

CAS

  • or

243655-94-9

Post Buying Request

243655-94-9 Suppliers

Recommended suppliersmore

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

243655-94-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 243655-94-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,3,6,5 and 5 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 243655-94:
(8*2)+(7*4)+(6*3)+(5*6)+(4*5)+(3*5)+(2*9)+(1*4)=149
149 % 10 = 9
So 243655-94-9 is a valid CAS Registry Number.

243655-94-9Relevant articles and documents

About the Leuckart reaction of chiral 2-norbornanones bearing electron-withdrawing groups: Reaction of bridgehead triflates and triflamides

García Martínez, Antonio,Teso Vilar, Enrique,García Fraile, Amelia,Martínez-Ruiz, Paloma

, p. 1565 - 1569 (2003)

The mechanism of the Leuckart reaction of 3,3- and 7,7-dimethyl-2-oxo-1-norbornyl triflates and triflamides, synthesised by us starting from (1R)-camphor and (1R)-fenchone, has been studied. Strikingly, the electron-withdrawing capacity of the bridgehead substituents has demonstrated not to be enough to control the Wagner-Meerwein rearrangement during the course of the reaction, so that only both enantiomers of a 3,3-dimethylnorbornanediamine derivative have been obtained as final products. As a result, the total synthesis of these interesting chiral compounds has been optimised and shortened until three overall steps starting from (1R)-fenchone.

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 243655-94-9