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18916-43-3

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18916-43-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18916-43-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,1 and 6 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 18916-43:
(7*1)+(6*8)+(5*9)+(4*1)+(3*6)+(2*4)+(1*3)=133
133 % 10 = 3
So 18916-43-3 is a valid CAS Registry Number.

18916-43-3SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name benzimidazole N-oxide

1.2 Other means of identification

Product number -
Other names 1H-benzoimidazole 3-oxide

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:18916-43-3 SDS

18916-43-3Relevant articles and documents

o-Nitroaniline Derivatives. Part 9. Benzimidazole N-Oxides Unsubstituted at N-1 and C-2

Harvey, Ian W.,McFarlane, Michael D.,Moody, David J.,Smith, David M.

, p. 681 - 690 (2007/10/02)

Since previous routes to the title compounds (1) have proved unsatisfactory as general methods, a simple new synthesis has been devised.N-Cyanomethyl-o-nitroanilines (5) are cyclised in basic media, giving 2-cyanobenzimidazole N-oxides (12) in good yield.Hydrolysis of these products with hydrochloric acid gives, directly, the title compounds as their hydrochloride salts (13), which may be isolated and purified, and which give the free N-oxides (1) by treatment with aqueous ammonia followed by evaporation. o-Nitrophenylglycine esters (4) may satisfactorily replace the nitriles (5) in certain cases.A modification of this kind in the related nitropyridylglycine series leads to 3H-imidazolpyridine 1-oxide (20).

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