Welcome to LookChem.com Sign In|Join Free
  • or
ethyl (R)-1-(prop-2-enyl)-2-oxocyclopentanecarboxylate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

156991-64-9

Post Buying Request

156991-64-9 Suppliers

Recommended suppliers

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

156991-64-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156991-64-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,9,9 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 156991-64:
(8*1)+(7*5)+(6*6)+(5*9)+(4*9)+(3*1)+(2*6)+(1*4)=179
179 % 10 = 9
So 156991-64-9 is a valid CAS Registry Number.

156991-64-9Downstream Products

156991-64-9Relevant academic research and scientific papers

Synthesis of enantiomerically pure bicyclic lactams

Diedrichs, Nicole,Westermann, Bernhard

, p. 1127 - 1129 (1999)

Enantiomerically pure homologous 1-azabicyclo-[x.y.0]alkanones (x = 4-5, y = 4-7) can be synthesized by ring closing olefin metathesis using Grubbs' ruthenium catalyst. By starting from monocyclic lactams, the bicyclic products, even eight- and nine-membered rings, are formed in high yields. The monocyclic lactames can be obtained enantiomerically pure by enzyme-catalyzed kinetic resolution.

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 Customer Service

What can I do for you?
Get Best Price

Get Best Price for 156991-64-9