Welcome to LookChem.com Sign In|Join Free

CAS

  • or

149835-49-4

Post Buying Request

149835-49-4 Suppliers

Recommended suppliersmore

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

149835-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149835-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,8,3 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 149835-49:
(8*1)+(7*4)+(6*9)+(5*8)+(4*3)+(3*5)+(2*4)+(1*9)=174
174 % 10 = 4
So 149835-49-4 is a valid CAS Registry Number.

149835-49-4Relevant articles and documents

Synthesis of Oxygen-Bridged Antigestagens

Cleve, Arwed,Ottow, Eckhard,Neef, Guenter,Wiechert, Rudolf

, p. 2217 - 2226 (2007/10/02)

A synthetic access to 10,11β-(oxy-1,2-phenylene)-steroids 13 is described.Key steps are the SN2' type introduction of suitably ortho substituted arenes into vinyl epoxide 4, and ring closure by an acid catalysed intramolecular epoxide opening with the corresponding phenol.The resulting oxygen bridged steroids 13 are transformed into pharmacologically relevant progesterone antagonists 19a-c and 20.Key Words: antigestagens; 11β-substituted steroids; 10,11β-(oxy-1,2-phenylene)-steroids; acid catalysed intramolecular epoxide opening

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 149835-49-4