Welcome to LookChem.com Sign In|Join Free

CAS

  • or

21406-30-4

Post Buying Request

21406-30-4 Suppliers

Recommended suppliersmore

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

21406-30-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21406-30-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,0 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 21406-30:
(7*2)+(6*1)+(5*4)+(4*0)+(3*6)+(2*3)+(1*0)=64
64 % 10 = 4
So 21406-30-4 is a valid CAS Registry Number.

21406-30-4Relevant articles and documents

An α-hydrazinoalkylphosphonate as building block for novel N-phosphonoalkylheterocycles

Li, Zai-Guo,Sun, Hui-Kai,Wang, Qing-Min,Huang, Run-Qiu

, p. 384 - 386 (2003)

α-Hydrazinoalkylphosphonate 3 is a useful building block for the syntheses of novel N-phosphonoalkylheterocycles. N-phosphonoalkylpyrazoles 8 and 9 were prepared by the cyclization reaction of 3 with malfunctioned ethenes 5 and 6 in ethanol under reflux. N-Phosphonoalkyltriazole 10 was synthesized from 3 with N-dimethylthiomethylene benzoyl amide 4 in ethanol under reflux. The structures were confirmed by IR, 1H NMR, mass spectroscopy, and elemental analysis. At the same time, the preparation of 4 was investigated.

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 21406-30-4