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917571-19-8

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917571-19-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 917571-19-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,7,5,7 and 1 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 917571-19:
(8*9)+(7*1)+(6*7)+(5*5)+(4*7)+(3*1)+(2*1)+(1*9)=188
188 % 10 = 8
So 917571-19-8 is a valid CAS Registry Number.

917571-19-8SDS

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 3-(5-tert-butylfuran-2-yl)-6-chloro-3H-2-benzofuran-1-one

1.2 Other means of identification

Product number -
Other names -

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:917571-19-8 SDS

917571-19-8Relevant articles and documents

Furan ring opening - Isocoumarine ring closure: A recyclization reaction of 2-carboxyaryldifurylmethanes

Abaev, Vladimir T.,Dmitriev, Artem S.,Gutnov, Andrey V.,Podelyakin, Sergey A.,Butin, Alexander V.

, p. 1195 - 1204 (2006)

A general method for the synthesis of isocoumarine derivatives has been developed. Bis(5-R-2-furyl)methylbenzoic acids (R = methyl, ethyl) underwent recyclization and subsequent cyclization into tetracyclic isochromene-1-one derivatives under treatment with hydrogen chloride in methanol. It has been shown that intermediate 4-(5-R-furan-2-yl)-3-(3-oxo-3-R-propyl)-isochromene-1- ones can be obtained selectively by varying a concentration of the hydrogen chloride and reaction times. In the case of R = tert-butyl only corresponding 4-[5-(tert-butyl)-2-furyl]-3-(4,4-dimethyl-3-oxopentyl)-1-isochromenones were isolated regardless of the reaction conditions.

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