Welcome to LookChem.com Sign In|Join Free

CAS

  • or

128843-83-4

Post Buying Request

128843-83-4 Suppliers

Recommended suppliersmore

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

128843-83-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128843-83-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,8,4 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 128843-83:
(8*1)+(7*2)+(6*8)+(5*8)+(4*4)+(3*3)+(2*8)+(1*3)=154
154 % 10 = 4
So 128843-83-4 is a valid CAS Registry Number.

128843-83-4Relevant articles and documents

Chiral Aldehydes by Ring Contraction of Pento- and Hexopyranoside Epoxides

Rehnberg, Nicola,Magnusson, Goeran

, p. 5467 - 5476 (2007/10/02)

The chiral aldehydes (-)-(2S,5S)- and (-)-(2S,5R)-2-oxy>methyl>-5-methoxy-2,5-dihydrofuran-3-carbaldehyde (2 and 4) were synthesized in 60 and 15percent yield, respectively, by lithium bromide induced rearrangement of 6-O-silylated methyl 2,3- and 3,4-anhydro-α- and -β-D-hexopyranosides, obtained in two steps from methyl α- and β-D-glucopyranoside.Rearrangement of various other pento- and hexoside epoxides permitted the suggestion of probable reaction routes.Hydrogenation of the unsaturated aldehydes gave the corresponding saturated aldehydes in good yield.

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 128843-83-4