Welcome to LookChem.com Sign In|Join Free

CAS

  • or

4009-22-7

Post Buying Request

4009-22-7 Suppliers

Recommended suppliersmore

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

4009-22-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4009-22-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,0,0 and 9 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 4009-22:
(6*4)+(5*0)+(4*0)+(3*9)+(2*2)+(1*2)=57
57 % 10 = 7
So 4009-22-7 is a valid CAS Registry Number.

4009-22-7Relevant articles and documents

The Preparation of Unsymmetrical Diacetylenes from Alkenynyl Triflates

Stang, Peter J.,Dixit, Vandana

, p. 962 - 963 (1985)

Alkenynyl triflates 5 (alkynylvinyl trifluoromethanesulfonates) are readily converted into unsymmetrical diacetylenes 6 in good yields by the base-initiated elimination of trifluoromethanesulfonic acid.

"Anti-Michael addition" of Grignard reagents to sulfonylacetylenes: Synthesis of alkynes

Esteban, Francisco,Boughani, Lazhar,García Ruano, José L.,Fraile, Alberto,Alemán, José

, p. 3901 - 3908 (2017/07/11)

In this work, the addition of Grignard reagents to arylsulfonylacetylenes, which undergoes an "anti-Michael addition", resulting in their alkynylation under very mild conditions is described. The simplicity of the experimental procedure and the functional

One-pot synthesis and functionalization of polyynes via alkylidene carbenoids

Luu, Thanh,Morisaki, Yasuhiro,Tykwinski, Rik R.

, p. 1158 - 1162 (2008/12/22)

A one-pot, two-step method for the synthesis of diynes and triynes is reported. The reaction of a dibromoolefinic precursor with BuLi effects a Fritsch-Buttenberg-Wiechell rearrangement and generates a lithium acetylide intermediate, which is then trapped

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 4009-22-7