Welcome to LookChem.com Sign In|Join Free

CAS

  • or

68641-85-0

Post Buying Request

68641-85-0 Suppliers

Recommended suppliersmore

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

68641-85-0 Usage

Uses

rac-Naproxen 2-Propyl Ester is an impurity of Naproxen (N377520) an non-steroidal antiinflammatory agent.

Check Digit Verification of cas no

The CAS Registry Mumber 68641-85-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,4 and 1 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 68641-85:
(7*6)+(6*8)+(5*6)+(4*4)+(3*1)+(2*8)+(1*5)=160
160 % 10 = 0
So 68641-85-0 is a valid CAS Registry Number.

68641-85-0Relevant articles and documents

Enantioselective protonation of prochiral enolates in the asymmetric synthesis of (S)-naproxen

Mu?oz-Mu?iz, Omar,Juaristi, Eusebio

, p. 2023 - 2026 (2003)

Racemic methyl, iso-propyl, and tert-butyl ester derivatives of naproxen were treated with achiral LDA base to give the corresponding prochiral enolates 2-Li, 3-Li, and 4-Li. Protonation of these enolates with novel chiral proton sources (S)-10 and (S,S)-11, containing the α-phenylethylamino group, proceeded in a highly enantioselective manner. Saponification of enantioenriched ester derivatives 2-4 afforded naproxen, (S)-1, with no loss of enantiopurity.

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 68641-85-0