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1899-05-4

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1899-05-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1899-05-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,9 and 9 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1899-05:
(6*1)+(5*8)+(4*9)+(3*9)+(2*0)+(1*5)=114
114 % 10 = 4
So 1899-05-4 is a valid CAS Registry Number.

1899-05-4SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name 1-oxa-6-thiacycloheptadecan-17-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:1899-05-4 SDS

1899-05-4Upstream product

1899-05-4Downstream Products

1899-05-4Relevant articles and documents

Intramolecular Cyclization of (ω-Carboxyalkyl)sulfonium Salts. A Novel Synthesis of Macrocyclic Lactones

Matsuyama, Haruo,Nakamura, Takako,Kamigata, Nobumasa

, p. 5218 - 5223 (2007/10/02)

A useful method for the synthesis of macrocyclic lactones using (ω-carboxyalkyl)sulfonium salts was developed.Base-catalyzed intramolecular cyclization of (ω-carboxyalkyl)diphenylsulfonium salts 2 gave simple macrocyclic lactones in high yields at high dilution conditions. (ω-Carboxyalkyl)alkylphenylsulfonium salts 8 afforded simple macrocyclic lactone 6a and alkyl carboxylates 9.The reactions of (ω-carboxyalkyl)dialkylsulfonium salts 10 gave only esters without lactonization product 6a.The cyclization of S-(ω-carboxyalkyl)thiolanium salts 3 and S-(ω-carboxyalkyl)-2-methylthiolanium salts 4 took place readily under similar conditions to afford sulfur-containing macrocyclic lactones 13 and 15, respectively, in good yields.To investigate the reaction mechanism, sulfonium salt 25, having an optically active carbon atom, was prepared.The intramolecular cyclization of 25 took place with an inversion of configuration at chiral carbon atom to give ricinelaidic acid lactone (26; optical purity 66percent).

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