Welcome to LookChem.com Sign In|Join Free

CAS

  • or

90925-16-9

Post Buying Request

90925-16-9 Suppliers

Recommended suppliersmore

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

90925-16-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90925-16-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,2 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 90925-16:
(7*9)+(6*0)+(5*9)+(4*2)+(3*5)+(2*1)+(1*6)=139
139 % 10 = 9
So 90925-16-9 is a valid CAS Registry Number.

90925-16-9Relevant articles and documents

Asymmetric synthesis of chiral 1,3-diaminopropanols: Bisoxazolidine- catalyzed C-C bond formation with α-keto amides

Xu, Hanhui,Wolf, Christian

supporting information; experimental part, p. 12249 - 12252 (2012/02/01)

Three high-yielding steps lead to the formation of chiral 1,3-diaminopropanols from aliphatic and aromatic α-keto amides. In this approach, a nitroaldol reaction, which is catalyzed by Cu(SO2CF 3)2 and the bisoxazolidine ligand L1, is followed by two mild reduction reactions (see scheme). Laborious protection and deprotection steps can be avoided by using this method.

Development of highly stereoselective asymmetric 6π- azaelectrocyclization of conformationally flexible linear 1-azatrienes. From determination of multifunctional chiral amines, 7-alkyl cis-1-amino-2-indanols, to application as a new synthetic strategy: Formal synthesis of 20-epiuleine

Tanaka, Katsunori,Kobayashi, Toyoharu,Mori, Hajime,Katsumura, Shigeo

, p. 5906 - 5925 (2007/10/03)

The highly stereoselective asymmetric 6π-azaelectrocyclization was achieved as a general synthetic method based on the reaction between the (E)-3-carbonyl-2,4,6-trienal compounds and the (-)-7-alkyl-cis-l-amino-2-indanol derivatives which are effective chiral amines. The 7-alkyl-substituted 2-indanol moiety of the cyclized products was efficiently removed by the novel manganese dioxide oxidation under remarkably mild conditions, and the method was successfully applied to the formal synthesis of optically active 20-epiuleine.

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 90925-16-9