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29444-27-7

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29444-27-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 29444-27-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,9,4,4 and 4 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 29444-27:
(7*2)+(6*9)+(5*4)+(4*4)+(3*4)+(2*2)+(1*7)=127
127 % 10 = 7
So 29444-27-7 is a valid CAS Registry Number.

29444-27-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name (all-Ξ)-O-acetyl-retinol

1.2 Other means of identification

Product number -
Other names Vitamin A acetate

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:29444-27-7 SDS

29444-27-7Relevant articles and documents

Z -isomerization of retinoids through combination of monochromatic photoisomerization and metal catalysis

Kahremany, Shirin,Sander, Christopher Lane,Tochtrop, Gregory P.,Kubas, Adam,Palczewski, Krzysztof

supporting information, p. 8125 - 8139 (2019/09/19)

Catalytic Z-isomerization of retinoids to their thermodynamically less stable Z-isomer remains a challenge. In this report, we present a photochemical approach for the catalytic Z-isomerization of retinoids using monochromatic wavelength UV irradiation treatment. We have developed a straightforward approach for the synthesis of Z-retinoids in high yield, overcoming common obstacles normally associated with their synthesis. Calculations based on density functional theory (DFT) have allowed us to correlate the experimentally observed Z-isomer distribution of retinoids with the energies of chemically important intermediates, which include ground- and excited-state potential energy surfaces. We also demonstrate the application of the current method by synthesizing gram-scale quantities of 9-cis-retinyl acetate 9Z-a. Operational simplicity and gram-scale ability make this chemistry a very practical solution to the problem of Z-isomer retinoid synthesis.

Process for producing retinol and intermediate compounds for producing the same

-

Page 14, (2010/01/31)

There are disclosed a disulfone compound of formula (1): wherein Ar denotes an aryl group that may have a substituent, R1 denotes a hydrogen atom or a protective group of a hydroxyl group and the wavy ine means that the disulfone compound is an E or Z geometrical isomer or i mixture thereof,a method for producing the same,intermediate compounds therefore anda process for producing retinol through the disulfone compound.

Preparation of (7Z) - and (7Z,11Z) - Vitamin A

Soukup,Widmer

, p. 4117 - 4118 (2007/10/02)

An efficient access to (7Z)- and (7Z,11Z)-vitamin A is described. Following the addition of a C6-acetylenic building block to 2,6,6-trimethylcyclohexanone (2), dehydration of the tert. alcohol 3 and formation of the C15-Wittig salt, the (7Z)-geometry was introduced by partial hydrogenation of the triple bond over Raney-nickel. Following Wittig reaction with (E)-2-methyl-4-acetoxy-2-butenal gave a mixture of the title compounds 8 and 9 which could easily be separated.

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