Welcome to LookChem.com Sign In|Join Free

CAS

  • or

681144-78-5

Post Buying Request

681144-78-5 Suppliers

Recommended suppliersmore

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

681144-78-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 681144-78-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,1,4 and 4 respectively; the second part has 2 digits, 7 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 681144-78:
(8*6)+(7*8)+(6*1)+(5*1)+(4*4)+(3*4)+(2*7)+(1*8)=165
165 % 10 = 5
So 681144-78-5 is a valid CAS Registry Number.

681144-78-5Downstream Products

681144-78-5Relevant articles and documents

Synthesis of Cyclopenta[b]indol-1-ones and Carbazol-4-ones from N-(2-Halophenyl)-Substituted Enaminones by Intramolecular Heck Reaction

Sorensen, Ulrik S.,Pombo-Villar, Esteban

, p. 82 - 89 (2007/10/03)

An efficient synthetic route towards N-methylated or nonmethylated 3,4-dihydrocyclopent[b]indol-1(2H)-ones (3) and 1,2,3,9-tetrahydrocarbazol-4(4H)-one (10) was elaborated, based on Pd-catalyzed intramolecular Heck reaction. The chemoselectivity of the cyclization was studied in the case of the bi- and trifunctional substrates 12 and 17, respectively. In the latter case, depending on the catalyst, either the brominated indole 18 or the tetracyclic compound 19 were obtained by single and double Heck reaction, respectively.

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 681144-78-5