Welcome to LookChem.com Sign In|Join Free

CAS

  • or
2-Butanol, 4-[(triphenylsilyl)oxy]-, (R)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

188524-99-4

Post Buying Request

188524-99-4 Suppliers

Recommended suppliersmore

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

188524-99-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188524-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,5,2 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 188524-99:
(8*1)+(7*8)+(6*8)+(5*5)+(4*2)+(3*4)+(2*9)+(1*9)=184
184 % 10 = 4
So 188524-99-4 is a valid CAS Registry Number.

188524-99-4Relevant articles and documents

An approach to clavams and 1-oxacephams from hydroxy acids

Furman, Bartlomiej,Kaluza, Zbigniew,Chmielewski, Marek

, p. 3135 - 3139 (2007/10/03)

[2 + 2] Cycloaddition of chlorosulfonyl isocyanate to chiral alkyl vinyl ethers bearing a stereogenic center in the alkyl part of the ether afford the corresponding azetidin-2-ones with relatively good asymmetric induction in certain cases. Reactions were shown to depend on steric requirements of the ligands at the stereogenic center. The model that rationalizes the stereochemical outcome is based on the s-cis conformation of the vinyl ether in which the bulkiest of the ligands is situated in the plane of the double bond, and the next most demanding substituent is placed gauche to the double bond.

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 188524-99-4