Welcome to LookChem.com Sign In|Join Free

CAS

  • or

70204-31-8

Post Buying Request

70204-31-8 Suppliers

Recommended suppliersmore

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

70204-31-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 70204-31-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,2,0 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 70204-31:
(7*7)+(6*0)+(5*2)+(4*0)+(3*4)+(2*3)+(1*1)=78
78 % 10 = 8
So 70204-31-8 is a valid CAS Registry Number.

70204-31-8Relevant articles and documents

Reaction de l'azaallyllithium en serie acetylenique: Une methode directe de preparation de phenylethynyl pyrrolidines, -pyrrolines et -pyrroles N-non substitues et N-alkyles

Vo-Quang, Liliane,Vo-Quang, Yen

, p. 145 - 151 (2007/10/02)

Cycloaddition of 1,3-diphenyl-2-azaallyllithium to tolane, diphenylbutadiyne and 1,4-diphenylbutenyne E produces quantitatively 2,3,4,5-tetraphenylpyrrole, 3-phenylethynyl-2,4,5-triphenyl-3-pyrroline and 3-phenylethynyl-2,4,5-triphenylpyrrolidine, respectively.Treatment before hydrolysis with benzyl bromide or dimethyl sulfate gives N-alkylsubstituted derivatives.The structure of 3-pyrrolines was established by spectral data and chemical correlations.Stereochemical courses of this new synthetic method for 3-pyrrolines are discussed.

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 70204-31-8