Welcome to LookChem.com Sign In|Join Free

CAS

  • or

92944-23-5

Post Buying Request

92944-23-5 Suppliers

Recommended suppliersmore

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

92944-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 92944-23-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,2,9,4 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 92944-23:
(7*9)+(6*2)+(5*9)+(4*4)+(3*4)+(2*2)+(1*3)=155
155 % 10 = 5
So 92944-23-5 is a valid CAS Registry Number.

92944-23-5Downstream Products

92944-23-5Relevant articles and documents

Termination of Biomimetic Cyclizations by the Allylsilane Function. Formation of the Steroid Nucleus in One Step from an Acyclic Polyenic Chain

Johnson, William S.,Chen, Yu-Qun,Kellogg, Michael S.

, p. 6653 - 6656 (1983)

The aim of this project was to modify the cyclization substrate 1, which is known to undergo ring closure to give 2a and 2b, in such a way that a five- instead of six-membered ring D is formed, thus resulting in the construction of the complete steroid nucleus.The substrate 5 was first prepared as shown in Scheme I, but it gave a very complicated mixture of cyclization products.However, the substrate 18, which was obtained as depicted in Scheme II, afforded the tetracyclic products 24 and 25 in >34percent yield.The steroidal constitution of the nucleus of these products was established by their transformation into the known 17α- and 17β-vinylandrostenones 36, which are convertible into progesterone.

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 92944-23-5