Welcome to LookChem.com Sign In|Join Free

CAS

  • or

138624-40-5

Post Buying Request

138624-40-5 Suppliers

Recommended suppliersmore

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

138624-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 138624-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,6,2 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 138624-40:
(8*1)+(7*3)+(6*8)+(5*6)+(4*2)+(3*4)+(2*4)+(1*0)=135
135 % 10 = 5
So 138624-40-5 is a valid CAS Registry Number.

138624-40-5Relevant articles and documents

Radical alkylation of: Para -quinone methides with 4-substituted Hantzsch esters/nitriles via organic photoredox catalysis

Wu, Qing-Yan,Min, Qing-Qiang,Ao, Gui-Zhen,Liu, Feng

supporting information, p. 6391 - 6394 (2018/09/25)

A novel photocatalytic protocol is herein described for the preparation of functionalized phenols via radical alkylation of para-quinone methides under transition-metal-free conditions. The reaction is external oxidant free and performed at ambient temperature upon visible light irradiation, allowing the access to various desired products in satisfactory yields. The readily available 4-alkyl-1,4-dihydropyridines serve as the effective alkyl radical precursors.

Novel syntheses of heterocycles with N-(1-haloalkyl)azinium halides. Part 2. Preparation of N-unsubstituted 1,4-dihydropyridines

Vanden Eynde,D'Orazio,Mayence,Maquestiau,Anders

, p. 1263 - 1268 (2007/10/02)

N-(1-Chloroalkyl)pyridinium chlorides, prepared from thionyl chloride, pyridine, and aldehydes, readily react with enaminocarbonyl derivatives to yield 1,4-dihydropyridines under mild and neutral conditions.

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 138624-40-5