Welcome to LookChem.com Sign In|Join Free

CAS

  • or

16939-49-4

Post Buying Request

16939-49-4 Suppliers

Recommended suppliersmore

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

16939-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16939-49-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,3 and 9 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 16939-49:
(7*1)+(6*6)+(5*9)+(4*3)+(3*9)+(2*4)+(1*9)=144
144 % 10 = 4
So 16939-49-4 is a valid CAS Registry Number.

16939-49-4Relevant articles and documents

Visible-light mediated stereospecific C(sp2)-H difluoroalkylation of (Z)-aldoximes

Chen, Hua,Deng, Hongmei,Gong, Haiying,Hao, Jian,Li, Mingjie,Peng, Yi,Wan, Wen,Wang, Qian,Zhang, Yifang

supporting information, p. 7867 - 7874 (2021/09/28)

A visible light mediated stereospecific C(sp2)-H difluoroalkylation of (Z)-aldoximes to (E)-difluoroalkylated ketoximes has been described. In this reaction, (hetero)-aromatic and aliphatic difluoroalkylated ketoximes could be obtained with the retention of the configuration of the starting aldoximes. A preliminary mechanism study showed that a difluoromethyl radicalviaan SET pathway was involved.

A mild system for synthesis of aldoximes and ketoximes in the presence of N-hydroxyphthalimide in aqueous system

Jiang, Xiaoying,Xu, Xiaohe,Lin, Yuyan,Yan, Yiyan,Li, Pingping,Bai, Renren,Xie, Yuanyuan

supporting information, p. 5879 - 5885 (2018/09/06)

An efficient method for synthesis of oximes from aldehydes or ketones with N-hydroxyphthalimide or N-hydroxysuccinimide in water has been described. It is the first time to utilize NHPI as an oximation reagent to synthesize aldoximes and ketoximes from the corresponding organic carbonyl compounds without other reagents. The reaction tolerates various functional groups and affords the corresponding oximes in 76%–98% yields. The by-product phthalic acid can be recycled from the system. In addition, this method has been successfully applied to the synthesis of the precursor of some pharmacologically active amide molecules.

CuH-Catalyzed Regioselective Intramolecular Hydroamination for the Synthesis of Alkyl-Substituted Chiral Aziridines

Wang, Haoxuan,Yang, Jeffrey C.,Buchwald, Stephen L.

supporting information, p. 8428 - 8431 (2017/07/06)

This report details a general and enantioselective means for the synthesis of alkyl-substituted aziridines. This protocol offers a direct route for the synthesis of alkyl-substituted chiral aziridines from achiral starting materials. Readily accessed ally

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 16939-49-4