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81549-23-7

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81549-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81549-23-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,5,4 and 9 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 81549-23:
(7*8)+(6*1)+(5*5)+(4*4)+(3*9)+(2*2)+(1*3)=137
137 % 10 = 7
So 81549-23-7 is a valid CAS Registry Number.

81549-23-7SDS

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 3,4-dihydro-3-hydroxy-3-phenyl-2H-1-benzothiopyran

1.2 Other means of identification

Product number -
Other names 3-phenylthiochroman-3-ol

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:81549-23-7 SDS

81549-23-7Relevant articles and documents

Metalation reactions XIII. The reactions of electrophiles with the dilithiated species 1-(α-lithiomethyl)-2-benzene

Cabiddu, S.,Floris, C.,Gelli, G.,Melis, S.

, p. 1 - 10 (2007/10/02)

Direct dimetalation of 1-methyl-2-(methylthio)benzene (1) gives the dilithiated species (2) in good yield, which can be used to introduce substituents into the thiomethyl and methyl groups.Species 2 can react also with a variety of dichlorosilanes and dichlorostannanes, and with sulphur chloride, to yield derivatives of 1,3-benzothiasilin, 1,3-benzothiastannin and 1,3-benzodithiin respectively.Reaction of 2 with tetrachlorosilane yields a spirocyclic silicon compound, while reaction with benzoyl chloride yields a derivative of 1-benzothiopyran.

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