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166593-11-9

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166593-11-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 166593-11-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,6,5,9 and 3 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 166593-11:
(8*1)+(7*6)+(6*6)+(5*5)+(4*9)+(3*3)+(2*1)+(1*1)=159
159 % 10 = 9
So 166593-11-9 is a valid CAS Registry Number.

166593-11-9Relevant articles and documents

Ambivalent nucleophilicity of 1,4,5-trisubstituted imidazole-2-thiones in reactions with dimethyl acetylenedicarboxylate and phenylisocyanate

Mloston,Gendek,Linden,Heimgartner

, p. 1561 - 1569 (2008/12/23)

The 1,4,5-trisubstitued 2,3-dihydro-1H-imidazole-2-thiones 1 react with electrophilic reagents via the S- or the N(3)-atom. The reaction with dimethyl acetylenedicarboxylate in methanol at room temperature occurs by the nucleophilic addition of the S-atom

Novel imidazoles and hydantoins moderately strained by incorporation with 2-azabicyclo[2.2.1]heptene skeleton

Kobayashi,Fujieda,Murakami,Nakamura,Ono,Yamamoto,Kato

, p. 3082 - 3087 (2007/10/02)

The reactions of 3-acyl-2-azabicyclo[2.2.1]hept-5-enes with phenyl isocyanate, phenyl isothiocyanate, and ethoxycarbonyl isothiocyanate followed by cyclization reactions under basic conditions respectively provided a hydantoin, a thiohydantoin, and a 1,3-

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