Welcome to LookChem.com Sign In|Join Free

CAS

  • or

221033-78-9

Post Buying Request

221033-78-9 Suppliers

Recommended suppliersmore

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

221033-78-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221033-78-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,0,3 and 3 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 221033-78:
(8*2)+(7*2)+(6*1)+(5*0)+(4*3)+(3*3)+(2*7)+(1*8)=79
79 % 10 = 9
So 221033-78-9 is a valid CAS Registry Number.

221033-78-9Downstream Products

221033-78-9Relevant articles and documents

On the mechanism of the addition of organolithium reagents to cinnamic acids

Aurell, María José,Ba?uls, María José,Mestres, Ramon,Mu?oz, Elena

, p. 1067 - 1074 (2007/10/03)

The regioselectivity of the addition of tert-butyllithium to cinnamic acid is subject to reaction conditions and to substituent electronic effects. Significant effects are observed in the presence of several additives including a radical trap such as α-methylstyrene. Competition experiments by addition of the organolithium reagent to mixtures of substituted cinnamic acids show that the relative rates of both conversion of the starting acids and formation of the 1,3-adducts are subject to electronic effects, whereas rates for 1,4-addition are independent of the substituents. These features are in agreement with a polar addition mechanism, but a fast SET equilibrium followed by slow radical combination would be possible as well.

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 221033-78-9