Welcome to LookChem.com Sign In|Join Free
  • or
(4S,4aR,9aR)-4-(4-Methoxy-phenyl)-3-methyl-4,4a,5,6,7,8,9,9a-octahydro-cyclohepta[e][1,2]oxazine 2-oxide is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

142840-13-9

Post Buying Request

142840-13-9 Suppliers

Recommended suppliers

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

142840-13-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142840-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,8,4 and 0 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142840-13:
(8*1)+(7*4)+(6*2)+(5*8)+(4*4)+(3*0)+(2*1)+(1*3)=109
109 % 10 = 9
So 142840-13-9 is a valid CAS Registry Number.

142840-13-9Downstream Products

142840-13-9Relevant academic research and scientific papers

Inter- and Intramolecular Cycloadditions of Nitroalkenes with Olefins. 2-Nitrostyrenes

Denmark, Scott E.,Kesler, Brenda S.,Moon, Young-Choon

, p. 4912 - 4924 (2007/10/02)

Aromatic nitroalkenes 9 - 12 underwent Lewis acid catalyzed cycloadditions with various cyclic alkenes to afford high yields of nitronates 25 - 30 with exclusive anti selectivity.Hammett studies helped to further delineate the role of the Lewis acid.Reaction of nitroalkenes 8 and 10 with various cyclic dienes in the presence of a Lewis acid demonstrated the ability of nitroalkenes to behave as dienes in cycloadditions.The major products were the syn diastereomers which arise from an endo-folded transition structure.Finally, intramolecular cycloaddition of 36 - 39 allowed a correlation between the stereochemical course of the reaction and positions of sp2 centers in the tether to be addressed.

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 142840-13-9