Welcome to LookChem.com Sign In|Join Free

CAS

  • or

7404-40-2

Post Buying Request

7404-40-2 Suppliers

Recommended suppliersmore

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

7404-40-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7404-40-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,4,0 and 4 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 7404-40:
(6*7)+(5*4)+(4*0)+(3*4)+(2*4)+(1*0)=82
82 % 10 = 2
So 7404-40-2 is a valid CAS Registry Number.

7404-40-2Relevant articles and documents

STRUCTURE AND ANOMERIC CONFIGURATION OF THE 3,6-ANHYDRO-OSAZONE DERIVATIVES OBTAINED FROM D-altro-2-HEPTULOSE PHENYLOSAZONE

Sallam, Mohammed A. E.

, p. 139 - 148 (2007/10/02)

Dehydration of D-altro-2-heptulose phenylosazone with methanolic sulfuric acid afforded two 3,6-anhydro-osazone derivatives (2 and 3).Compound 3 was obtained as the preponderant isomer, with inversion at C-1 (C-3 of the starting osazone), and 2 was obtained without inversion.Refluxing of 3 with copper sulfate afforded the C-nucleoside analog, namely, 2-phenyl-4-β-D-ribofuranosyl-1,2,3-osotriazole (4).Acetylation of 4 afforded the tri-O-acetyl derivative 5.The anomeric configuration was determined by c.d. and n.m.r. spectroscopy.The mass spectra of compounds 2-5 are discussed.

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 7404-40-2