Welcome to LookChem.com Sign In|Join Free

CAS

  • or

209954-22-3

Post Buying Request

209954-22-3 Suppliers

Recommended suppliersmore

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

209954-22-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209954-22-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,9,5 and 4 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 209954-22:
(8*2)+(7*0)+(6*9)+(5*9)+(4*5)+(3*4)+(2*2)+(1*2)=153
153 % 10 = 3
So 209954-22-3 is a valid CAS Registry Number.

209954-22-3Downstream Products

209954-22-3Relevant articles and documents

Process for producing hydroquinone diester derivative

-

Example 1, (2008/06/13)

A hydroquinone diester derivative represented by the formula (1): wherein R1and R2are the same or different, each representing an alkyl group, a cycloalkyl group, an aryl group, or a heterocyclic group is crystallized from a reaction

HYDROQUINONE DIESTER DERIVATIVES AND THE METHOD FOR PRODUCING THE SAME

-

, (2008/06/13)

A highly pure hydroquinone dietser derivative can be produced from the reaction product of ketoisophorone with an acylating agent in a high yield by a simple and easy operation. In the presence of an acid catalyst, a cyclohex-2-ene-1,4-dione derivative shown by the following formula (3) was allowed to react with an acylating agent (e.g., acetic anhydride), and the reaction product was purified by crystallization to obtain a hydroquinone diester derivative shown by the following formula (1). The compound (1) contains about 0 to 4% by weight of a catechol diester derivative represented by the following formula (2), being highly pure. As a solvent for crystallization, a mixed solvent of an organic carboxylic acid (e.g., acetic acid) corresponding to the acylating agent and water may be used. In the formulae, R1 and R2 each represents an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group.

Hydroquinone diester derivatives and the method for producing the same

-

, (2008/06/13)

A highly pure hydroquinone dietser derivative can be produced from the reaction product of ketoisophorone with an acylating agent in a high yield by a simple and easy operation. In the presence of an acid catalyst, a cyclohex-2-ene-1,4-dione derivative shown by the following formula (3) was allowed to react with an acylating agent (e.g., acetic anhydride), and the reaction product was purified by crystallization to obtain a hydroquinone diester derivative shown by the following formula (1). The compound (1) contains about 0 to 4% by weight of a catechol diester derivative represented by the following formula (2), being highly pure. As a solvent for crystallization, a mixed solvent of an organic carboxylic acid (e.g., acetic acid) corresponding to the acylating agent and water may be used. In the formulae, R1and R2each represents an alkyl group, a cycloalkyl group, an aryl group or a heterocyclic group.

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 209954-22-3