Welcome to LookChem.com Sign In|Join Free

CAS

  • or

21844-93-9

Post Buying Request

21844-93-9 Suppliers

Recommended suppliersmore

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

21844-93-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21844-93-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,4 and 4 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21844-93:
(7*2)+(6*1)+(5*8)+(4*4)+(3*4)+(2*9)+(1*3)=109
109 % 10 = 9
So 21844-93-9 is a valid CAS Registry Number.

21844-93-9Downstream Products

21844-93-9Relevant articles and documents

On the selective O-alkylation of ambident nucleophiles - The synthesis of thiohydroxamic acid O-esters by phase-transfer reactions

Hartung, Jens,Kneuer, Rainer,Schwarz, Michaela,Svoboda, Ingrid,Fue?, Hartmut

, p. 97 - 106 (2007/10/03)

O-Alkylation of cyclic thiohydroxamic acids 1 and 3-5 has been studied with a view to developing an efficient method for the synthesis of N- (alkoxy)pyridine-2(1H)-thiones and N(alkoxy)thiazole-2(3H)-thiones. Four issues have been addressed and the follow

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 21844-93-9