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253662-82-7

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253662-82-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 253662-82-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,3,6,6 and 2 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 253662-82:
(8*2)+(7*5)+(6*3)+(5*6)+(4*6)+(3*2)+(2*8)+(1*2)=147
147 % 10 = 7
So 253662-82-7 is a valid CAS Registry Number.

253662-82-7SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name (2R,4R)-2-(4-methoxyphenyl)-5,5-dimethyl-1,3-dioxan-4-carbaldehyde

1.2 Other means of identification

Product number -
Other names (2R,4R)-2-(4-Methoxy-phenyl)-5,5-dimethyl-[1,3]dioxane-4-carbaldehyde

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:253662-82-7 SDS

253662-82-7Relevant articles and documents

A gold-catalyzed alkyne-diol cycloisomerization for the synthesis of oxygenated 5,5-spiroketals

Tlais, Sami F.,Dudley, Gregory B.

scheme or table, p. 570 - 577 (2011/06/26)

A highly efficient synthesis of oxygenated 5,5-spiroketals was performed towards the synthesis of the cephalosporolides. Gold(I) chloride in methanol induced the cycloisomerization of a protected alkyne triol with concomitant deprotection to give a strate

A striking exception to the chelate model for acyclic diastereocontrol: Efficient access to a versatile propargyl alcohol for chemical synthesis

Tlais, Sami F.,Clark, Ronald J.,Dudley, Gregory B.

experimental part, p. 5216 - 5222 (2010/03/30)

The four-step, asymmetric synthesis of a chiral propargyl alcohol 1 from (R)-pantolactone is described. A key feature of the synthesis is a diastereoselective acetylide addition to a chiral α-alkoxy-aldehyde 7, in which unusual Felkin selectivity is obser

N-tert-Butylbenzenesulfenamide-catalyzed oxidation of alcohols to the corresponding carbonyl compounds with N-chlorosuccinimide

Matsuo, Jun-Ichi,Iida, Daisuke,Yamanaka, Hiroyuki,Mukaiyama, Teruaki

, p. 6739 - 6750 (2007/10/03)

N-tert-Butylbenzenesulfenamide (1)-catalyzed oxidation of various primary and secondary alcohols to the corresponding aldehydes and ketones was efficiently carried out by using N-chlorosuccinimide (NCS) in the coexistence of potassium carbonate and molecular sieves 4? at easy-to-control temperatures ranging from 0°C to room temperature. The present catalytic oxidation was performed without giving any damage to the functional groups in alcohols, and was particularly effective in the oxidation of alcohols that formed labile aldehydes because of its mild reaction conditions. Further, selective oxidation of primary hydroxy groups took place in 1-catalyzed oxidation of several diols. Mechanistic investigation suggested that the chlorination of the sulfenamide 1 by NCS led to the formation of a key species, N-tert-butylbenzenesulfinimidoyl chloride (2), which in turn oxidized alcohols in the presence of potassium carbonate to afford carbonyl products by accompanying regeneration of the catalyst 1.

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