Welcome to LookChem.com Sign In|Join Free
  • or
(6'R,3'S)-epoxy-3',6' trimethyl-7',7',3' oxy-7 coumarine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

21499-19-4

Post Buying Request

21499-19-4 Suppliers

Recommended suppliers

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

21499-19-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 21499-19-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,9 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21499-19:
(7*2)+(6*1)+(5*4)+(4*9)+(3*9)+(2*1)+(1*9)=114
114 % 10 = 4
So 21499-19-4 is a valid CAS Registry Number.

21499-19-4Downstream Products

21499-19-4Relevant academic research and scientific papers

SYNTHESES EN SERIE RACEMIQUE ET EN SERIE OPTIQUEMENT ACTIVE D'UNE FAMILLE DE DERIVES OXYGENES NATURELS DE L'OMBELLIFERONE. STRUCTURE SPATIALE DU (-)EPOXY-3',6' AURAPTENE.

Aziz, Mostafa,Rouessac, Francis

, p. 101 - 110 (2007/10/02)

3',6'-Epoxyaurapten and marmin were synthesized by a stereocontrolled way in racemic then in optically active forms from a chiral precursors.The synthetic strategy is of biomimetic type.The reaction sequence involved a Sharpless asymmetric epoxydation as the key-step to induce chirality.E nantiomeric conversion gave rise to the opposite unnatural serie.The structural dimensions of (-)3'6'-epoxyaurapten have been ascertained by means of X-ray cristallography.This route allows the preparation of related molecules.

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 Customer Service

What can I do for you?
Get Best Price

Get Best Price for 21499-19-4