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49772-93-2

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49772-93-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 49772-93-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,9,7,7 and 2 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 49772-93:
(7*4)+(6*9)+(5*7)+(4*7)+(3*2)+(2*9)+(1*3)=172
172 % 10 = 2
So 49772-93-2 is a valid CAS Registry Number.

49772-93-2Downstream Products

49772-93-2Relevant articles and documents

Rh(II)-Catalyzed Transannulation of 1,2,4-Oxadiazole Derivatives with 1-Sulfonyl-1,2,3-triazoles: Regioselective Synthesis of 5-Sulfonamidoimidazoles

Strelnikova, Julia O.,Rostovskii, Nikolai V.,Starova, Galina L.,Khlebnikov, Alexander F.,Novikov, Mikhail S.

, p. 11232 - 11244 (2018/09/06)

An effective method for the synthesis of fully substituted 5-sulfonamidoimidazoles by Rh(II)-catalyzed transannulation of 1,2,4-oxadiazole derivatives with N-sulfonyl-1,2,3-triazoles is reported. The reaction works well with both aromatic 1,2,4-oxadiazoles and 1,2,4-oxadiazol-5-ones providing a flexible approach to N-(alkoxy/amino)carbonyl- and N-alkyl-substituted imidazoles. Both the disclosed reactions are completely regioselective and provide the first examples of a carbenoid-mediated transformation of N,N,O-heterocycles.

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