Welcome to LookChem.com Sign In|Join Free

CAS

  • or

87307-75-3

Post Buying Request

87307-75-3 Suppliers

Recommended suppliersmore

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

87307-75-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87307-75-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,3,0 and 7 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 87307-75:
(7*8)+(6*7)+(5*3)+(4*0)+(3*7)+(2*7)+(1*5)=153
153 % 10 = 3
So 87307-75-3 is a valid CAS Registry Number.

87307-75-3Relevant articles and documents

Synthesis of 3-Methyl-5,6-dihydro-3H-benzofuroisoquinolin-7(7aH)-ones

Weller, Dwight D.,Stirchak, Eugene P.,Weller, Doreen L.

, p. 4597 - 4605 (2007/10/02)

The coupling of 2-(alkoxymethoxy)phenylcopper derivatives with the salt of ethyl chloroformate and ethyl 3-(pyridin-3-yl)propenoate was found to be an efficient method for the preparation of 4-(2-hydroxyphenyl)pyridines 13 substituted at C-3 with a propanoate side chain.N-Methylation and O-alkylation with ethyl bromoacetate gave salts 3 which when treated with base underwent an intramolecular enolate addition to the pyridinium nucleus to produce spiro 4.Prolonged base treatment of 4 yielded ethyl 3-methyl-7-hydroxy-5,7a-dihydro-3H-benzofuroisoquinoline-6-carboxylates 5 by a Dieckmann reaction.Reduction of 5 led to predominately trans-3-methylhexahydro-1H-benzofuroisoquinolin-7(7aH)-ones, while reduction of 4 and then Dieckmann cyclization yielded mainly the cis isomers.

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 87307-75-3