Welcome to LookChem.com Sign In|Join Free

CAS

  • or

137648-20-5

Post Buying Request

137648-20-5 Suppliers

Recommended suppliersmore

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

137648-20-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137648-20-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,6,4 and 8 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137648-20:
(8*1)+(7*3)+(6*7)+(5*6)+(4*4)+(3*8)+(2*2)+(1*0)=145
145 % 10 = 5
So 137648-20-5 is a valid CAS Registry Number.

137648-20-5Downstream Products

137648-20-5Relevant articles and documents

Synthesis and Biologic Activity of 2'-Fluoro-2-halo Derivatives of 9-β-D-Arabinofuranosyladenine

Montgomery, John A.,Shortnacy-Fowler, Anita T.,Clayton, Sarah D.,Riordan, James M.,Secrist, John A.

, p. 397 - 401 (2007/10/02)

The synthesis of 2-halo-9-(2-deoxy-2-fluoro-β-D-arabinofuranosyl)adenines (4b and 4d) by coupling the 2,6-dihalopurine with 3-acetyl-5-benzoyl-2-deoxy-2-fluoro-D-arabinofuranosyl bromide (2) followed by replacement of the 6-halogen with concomitant removal of the acyl blocking groups is described. 2-Fluoroadenine derivative 4g had to be prepared by the diazotization-fluorination of 2-aminoadenine nucleoside 4e.All three nucleosides provided good increases in life span of mice inoculated with P388 leukemia.The best results were obtained when the compounds were administered q3h*8 on days 1, 5, and 9 after implantation of the leukemia cells.The 2',3'-dideoxynucleoside 5b, prepared by deacetylation of 4f and deoxygenation of the resultant 4h followed by removal of the benzoyl group of 5a, was slightly active against HIV in cell culture.

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 137648-20-5