Welcome to LookChem.com Sign In|Join Free

CAS

  • or

404859-21-8

Post Buying Request

404859-21-8 Suppliers

Recommended suppliersmore

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

404859-21-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 404859-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,4,8,5 and 9 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 404859-21:
(8*4)+(7*0)+(6*4)+(5*8)+(4*5)+(3*9)+(2*2)+(1*1)=148
148 % 10 = 8
So 404859-21-8 is a valid CAS Registry Number.

404859-21-8Upstream product

404859-21-8Downstream Products

404859-21-8Relevant articles and documents

Iron-catalyzed stereoselective haloamidation of amide-tethered alkynes

Liu, Jin-Biao,Ren, Miaofeng,Lai, Xiaojing,Qiu, Guanyinsheng

, p. 4259 - 4262 (2021)

In this work, by usingN-methoxybenzamides as efficient acyl nitrene precursors, an iron-catalyzed formalcis-haloamidation of alkyne is reported. Without assistance of additives, the reaction worked well in the presence of 50 mol% FeCl3or FeBr3, leading to a series of chloro/bromo-containing isoindolin-5-ones with high efficiency and wide reaction scope. In the reaction, the iron-facilitated haloamidation proceeds through a halo anion-participating concerted [3+2] cyclization to release the final products. The key intermediate ferric acyl nitreneAis generatedin situfrom a formal removal of MeOH.

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 404859-21-8