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89902-45-4

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89902-45-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89902-45-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,9,0 and 2 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89902-45:
(7*8)+(6*9)+(5*9)+(4*0)+(3*2)+(2*4)+(1*5)=174
174 % 10 = 4
So 89902-45-4 is a valid CAS Registry Number.

89902-45-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name tert-butyl-hydroxy-dimethylsilane,4-methylbenzenesulfonic acid

1.2 Other means of identification

Product number -
Other names butyldimethylsilyl toluene-4-sulfonate

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:89902-45-4 SDS

89902-45-4Downstream Products

89902-45-4Relevant articles and documents

A Convenient Synthesis of 8-Substituted Indolizines as Precursors to 5-Substituted Cycl{3.2.2}azine Derivatives

Smith, Jonathan O.,Mandal, Braja K.

, p. 1441 - 1446 (2007/10/03)

The synthesis of 8-substituted indolizines is described via a two step process in which a 1,4-diketone, containing a tert-butyl group, is cyclocondensed with a trialkylsilyl protected pyrrole to provide 5,8-disubstituted indolizines in higher yields than the identical reaction with unprotected pyrrole. Cleavage of the tertbutyl group from the indolizine 5-position, by treatment with 85% phosphoric acid, provides 8-substituted indolizines in good yields. Treatment of 8-substituted indolizines with dimethyl acetylenedicarboxylate, in the presence of palladium-on-carbon, provides novel 5-substituted cycl{3.2.2} derivatives.

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