Welcome to LookChem.com Sign In|Join Free
  • or
10-Benzyloxymethyl-3,6,9,12,15,18-hexaoxa-1,20-eicosandiol bis-tetrahydropyranyl ether is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

99557-31-0

Post Buying Request

99557-31-0 Suppliers

Recommended suppliers

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

99557-31-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99557-31-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,5,5 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99557-31:
(7*9)+(6*9)+(5*5)+(4*5)+(3*7)+(2*3)+(1*1)=190
190 % 10 = 0
So 99557-31-0 is a valid CAS Registry Number.

99557-31-0Relevant academic research and scientific papers

Phase-Transfer-Catalyzed Synthesis of Oligoethylene Glycols and Derivatives

Bartsch, Richard A.,Cason, Victor C.,Czech, Bronislaw P.

, p. 857 - 860 (2007/10/02)

An efficient, two-step synthetic method for the addition of ethyleneoxy units to diols is reported.Reaction of HOROH with Cl(CH2CH2O)nTHP and 50percent aqueous NaOH in the presence of a phase-transfer catalyst gives THP(OCH2CH2)nORO(CH2CH2O)nTHP from which the protecting groups are readily removed to provide H(OCH2CH2)nORO(CH2CH2O)n in good-to-excellent yields.The influence of reactant diol structure upon yield has been determined.

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 99557-31-0