Welcome to LookChem.com Sign In|Join Free

CAS

  • or

90554-53-3

Post Buying Request

90554-53-3 Suppliers

Recommended suppliersmore

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

90554-53-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90554-53-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,5,5 and 4 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90554-53:
(7*9)+(6*0)+(5*5)+(4*5)+(3*4)+(2*5)+(1*3)=133
133 % 10 = 3
So 90554-53-3 is a valid CAS Registry Number.

90554-53-3Downstream Products

90554-53-3Relevant articles and documents

N-Silylenamines as Reactive Intermediates: Hydroamination for the Modular Synthesis of Selectively Substituted Pyridines

Lui, Erica K. J.,Hergesell, Daniel,Schafer, Laurel L.

supporting information, p. 6663 - 6667 (2018/11/21)

A modular and selective synthesis of mono-, di-, tri-, tetra-, and pentasubstituted pyridines is reported. Hydroamination of alkynes with N-silylamine using a bis(amidate)bis(amido)titanium(IV) precatalyst furnishes the regioselective formation of N-silylenamines. Addition of α,β-unsaturated carbonyls to the crude mixtures followed by oxidation affords 47 examples of pyridines in yields of up to 96%. This synthetic route allows for the synthesis of diverse pyridines containing variable substitution patterns, including pharmaceutically relevant 2,4,5-trisubstituted pyridines, using this one-pot protocol.

Cross Mannich Reaction of Aldehydes; Efficient Synthesis of Substituted Pyridines

Winter, Andreas,Risch, Nikolaus

, p. 2667 - 2670 (2007/10/03)

Symmetrically and unsymmetrically substituted pyridines were obtained in highly efficient one-pot procedures starting from α-unbranched aldehydes and iminium salts.

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 90554-53-3