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68452-01-7

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68452-01-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68452-01-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,4,5 and 2 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 68452-01:
(7*6)+(6*8)+(5*4)+(4*5)+(3*2)+(2*0)+(1*1)=137
137 % 10 = 7
So 68452-01-7 is a valid CAS Registry Number.

68452-01-7SDS

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 4,7-dimethoxybenzo[b]thiophene

1.2 Other means of identification

Product number -
Other names 4,7-dimethoxy-benzo[b]thiophene

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:68452-01-7 SDS

68452-01-7Upstream product

68452-01-7Relevant articles and documents

An Efficient Route to Benzothiophene Quinones, Quinone Bisketals, and Quinone Monoketals via Anodic Oxidation of Methoxylated Benzothiophenes. Studies Directed at the Synthesis of Functionalized Benzothiophene-4,7-quinones

Chenard, Bertrand L.,McConnell, J. Russell,Swenton, John S.

, p. 4312 - 4317 (1983)

A convenient route to 4-and 7-methoxybenzothiophenes has been developed in the course of electrochemical studies of these molecules.The anodic oxidations of 4-methoxy-, 5-bromo-4-methoxy-, 5-methyl-4-methoxy-, and 6-bromo-7-methoxybenzothiophene, 17a-d, respectively, in methanolic potassium hydroxide at a platinum anode have been investigated.The products obtained from the oxidation of these compounds were temperature dependent.This temperature dependence was most extensively studied for 17a wherein oxidation at or below room temperature, followed by workup, gave primarily 4,7-dimethoxybenzothiophene.However, oxidation of 17a in methanol at ca. 65 deg C gave primarily the quinone bisketal.In a similar manner oxidation of 17b,c gave the respective bisketals of benzothiophene-4,7-quinones in good yields.Extended acidic hydrolyses of these quinone bisketals afforded the corresponding quinones in 78-95 percent yield.Milder conditions for the hydrolyses afforded monoketals of benzothiophene-4,7-quinones, the products from 17b,c being formed with high regioselectivity.Other chemistry of these quinone bis- and monoketals, initially directed at a synthesis of Caldariellaquinone, is presented and discussed.

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