Welcome to LookChem.com Sign In|Join Free

CAS

  • or

203131-97-9

Post Buying Request

203131-97-9 Suppliers

Recommended suppliersmore

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

203131-97-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203131-97-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,1,3 and 1 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 203131-97:
(8*2)+(7*0)+(6*3)+(5*1)+(4*3)+(3*1)+(2*9)+(1*7)=79
79 % 10 = 9
So 203131-97-9 is a valid CAS Registry Number.

203131-97-9Downstream Products

203131-97-9Relevant articles and documents

Syntheses of Dialkyl and Functionalized Ketones via 1-(Benzotriazol-1-yl)alkyl Methyl Thioethers

Katritzky, Alan R.,Oniciu, Daniela C.,Ghiviriga, Ion,Soti, Ferenc

, p. 2110 - 2115 (2007/10/03)

Benzotriazol-1-ylmethyl methyl thioether (1), after easy deprotonation by BuLi, reacted with alkyl halides to afford 1-(benzotriazol-1-yl)alkyl methyl thioethers 2 in good yields. The utility of compounds 2 as alkanoyl anion equivalents was demonstrated by the reactions of their anions with alkyl halides, aldehydes, ketones, esters, and phenyl isocyanate: the products were readily hydrolyzed to α-functionalized ketones in dilute aqueous acid.

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 203131-97-9