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209273-66-5

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209273-66-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 209273-66-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,9,2,7 and 3 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 209273-66:
(8*2)+(7*0)+(6*9)+(5*2)+(4*7)+(3*3)+(2*6)+(1*6)=135
135 % 10 = 5
So 209273-66-5 is a valid CAS Registry Number.

209273-66-5Downstream Products

209273-66-5Relevant articles and documents

An environmentally benign procedure for the synthesis of substituted 2-thiobenzothiazoles, 2-thiobenzoxazoles, 2-thiobenzimidazoles, and 1,3-oxazolopyridine-2-thiols

Deligeorgiev, Todor G.,Kaloyanova, Stefka S.,Lesev, Nedyalko Y.,Vaquero, Juan J.

, p. 895 - 899 (2011)

An improved environmentally benign procedure for the synthesis of substituted 2-thio-benzothia(oxa)zoles, 2-thiobenzimidazoles, and 1,3-oxazolopyridine-2-thiols by cyclization of 2-aminophenols, 2-aminothiophenols, 1,2-phenylenediamines, or 2-amino-3-hydroxypyridines with potassium O-ethyldithiocarbonate in PEG 400 or glycerol under directed microwave irradiation is described. The method can be applied to the synthesis of a variety of derivatives. Springer-Verlag 2011.

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