Welcome to LookChem.com Sign In|Join Free

CAS

  • or

139683-39-9

Post Buying Request

139683-39-9 Suppliers

Recommended suppliersmore

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

139683-39-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139683-39-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,8 and 3 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139683-39:
(8*1)+(7*3)+(6*9)+(5*6)+(4*8)+(3*3)+(2*3)+(1*9)=169
169 % 10 = 9
So 139683-39-9 is a valid CAS Registry Number.

139683-39-9Relevant articles and documents

Oxidative Cyclization of δ,ε- and ε,ζ-Unsaturated Enol Silyl Ethers and Unsaturated Siloxycyclopropanes

Snider, Barry B.,Kwon, Taesoo

, p. 2399 - 2410 (2007/10/02)

Oxidative cyclization of δ,ε- and ε,ζ-unsaturated enol silyl ethers 4a and 4b with cupric triflate and cuprous oxide or ceric ammonium nitrate and sodium bicarbonate in acetonitrile provides the tricyclic ketones 5a and 5b stereoselectively.These cyclizat

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 139683-39-9