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Organic silicone chemicals

Hexamethyldisilazane/HMDS
Index No.: km-673
Products Name Hexamethyldisilazane/HMDS
CAS No.: 999-97-3
Introduction

                     Hexamethyldisilazane/HMDS CAS No.999-97-3

Product details

 

Chemical Name:

Hexamethyldisilazane

CAS No.:

999-97-3

EINECS No.:

213-668-5

Empirical Formula:

19 NSi 2

Color and Appearance:

Clear Transparent liquid 

Purity:

99% by GC

 
 

Applications

It can be used to introduce trimethylsilyl group into organic molecules containing an active hydrogen atom such as alcohols, carboxylic acids, amines etc. The most common industrial application  is in production of semi synthetic beta lactum antibiotics as ampicillin and cephalexin.

 

The usual procedure is to protect the carboxylic group in the antibiotic with HDMS followed by acylation with the desired acylchloride. Finally, desilylation under mild aqueous conditions gives the desired product.

Package: 150kg/Iron drum or 750kg/IBC drum 



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