Welcome to LookChem.com Sign In|Join Free

CAS

  • or

2253-33-0

Post Buying Request

2253-33-0 Suppliers

Recommended suppliersmore

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

2253-33-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2253-33-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,2,5 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2253-33:
(6*2)+(5*2)+(4*5)+(3*3)+(2*3)+(1*3)=60
60 % 10 = 0
So 2253-33-0 is a valid CAS Registry Number.

2253-33-0Relevant articles and documents

Preparation of α-fluoro-β-per(poly) fluoroalkyl-substituted enol ethers

Thenappan, Alagappan,Burton, Donald J.

, p. 45 - 50 (2007/10/03)

Fluorocarboethoxymethylene tri-n-butylphosphorane, Bu3P=CFCOOEt (3), reacts with per- and poly-fluoroalkyl-substituted carboxylic acid esters, ethyl formate and γ-butyrolactone to give the corresponding enol ethers, RFC (OEt)=CFCOOEt (4), in good yield. Non-activated esters failed to react with 3. With the anion derived from ethyl diethylphosphonofluoroacetate, (EtO)2P(O)CFHCOOEt (5), a mixture of 4 and β-ketoesters, RFC(O)CFHCOOEt (7), is formed.

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 2253-33-0