Welcome to LookChem.com Sign In|Join Free

CAS

  • or

250592-89-3

Post Buying Request

250592-89-3 Suppliers

Recommended suppliersmore

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

250592-89-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 250592-89-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,5,9 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 250592-89:
(8*2)+(7*5)+(6*0)+(5*5)+(4*9)+(3*2)+(2*8)+(1*9)=143
143 % 10 = 3
So 250592-89-3 is a valid CAS Registry Number.

250592-89-3Relevant articles and documents

Improved method for preparing topramezone

-

, (2018/07/30)

The invention discloses an improved method for preparing topramezone and belongs to the technical field of chemical synthesis. The improved method takes 3-nitro-o-xylene as a raw material and is characterized in that the topramezone is obtained through oximation reaction, ethylene cyclization, palladium carbon reduction, diazotization, aldehydelation, oxidation and condensation rearrangement reaction; under optimal conditions, the total yield is 33.7 percent, the raw material is cheap and easy to obtain, the treatment is convenient in the whole process, the yield is relatively high, and a certain significance in industrialized production is realized.

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 250592-89-3