Welcome to LookChem.com Sign In|Join Free

CAS

  • or

500021-58-9

Post Buying Request

500021-58-9 Suppliers

Recommended suppliersmore

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

500021-58-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 500021-58-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,0,2 and 1 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 500021-58:
(8*5)+(7*0)+(6*0)+(5*0)+(4*2)+(3*1)+(2*5)+(1*8)=69
69 % 10 = 9
So 500021-58-9 is a valid CAS Registry Number.

500021-58-9Relevant articles and documents

Divergent syntheses of L-733, 060 and CP-122721 from functionalized pieridinones made by one-pot tandem cyclization

Liu, Yi-Wen,Mao, Zhuo-Ya,Ma, Rui-Jun,Yan, Jia-Hang,Si, Chang-Mei,Wei, Bang-Guo

, p. 2100 - 2108 (2017)

An efficient diastereoselective approach to access trans-5-hydroxy-6-substituted 2-piperidinones skeleton has been developed through one-pot intramolecular tandem process of O-benzyl protected aldimine 11 with Grignard reagents. The diastereoselectivity of substitution at C-6 position of 2-piperidinone was controlled by α-benzyloxy group. In addition, the utility of this straightforward cascade process is demonstrated by the asymmetric syntheses of (+)-L-733, 060 (2) and its 2-substituted analogue 3, as well as (+)-CP-122721 (5).

Enantioselective synthesis of NK-1 receptor antagonists (+)-CP-99,994 and (+)-CP-122,721

Yamazaki, Naoki,Atobe, Masakazu,Kibayashi, Chihiro

, p. 7979 - 7982 (2007/10/03)

An enantioselective total synthesis of NK-1 receptor antagonists, (+)-CP-99,994 and (+)-CP-122,721, is described. The key steps are diastereoselective addition of vinyllithium to a chiral benzaldehyde oxime ether and diastereoselective borane reduction of

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 500021-58-9