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57639-14-2

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57639-14-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57639-14-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,3 and 9 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 57639-14:
(7*5)+(6*7)+(5*6)+(4*3)+(3*9)+(2*1)+(1*4)=152
152 % 10 = 2
So 57639-14-2 is a valid CAS Registry Number.

57639-14-2Downstream Products

57639-14-2Relevant articles and documents

One pot synthesis using supported reagents system KSCN/SiO 2-RNH3OAc/Al2O3: Synthesis of 2-aminothiazoles and N-allylthioureas

Aoyama, Tadashi,Murata, Sumiko,Arai, Izumi,Araki, Natsumi,Takido, Toshio,Suzuki, Yoshitada,Kodomari, Mitsuo

, p. 3201 - 3213 (2006)

A simple and efficient method has been developed for the synthesis of 2-aminothiazoles and N-allylthioureas from commercially available materials in one pot by using a supported reagents system, KSCN/SiO2-RNH 3OAc/Al2O3, in which α-halo ketone reacts first KSCN/SiO2 and the product, α-thiocyanatoketone, reacts with RNH3OAc/Al2O3 to give the final product, 2-aminothiazoles, in good yield and allyl bromide reacts with KSCN/SiO 2 and the product, allyl isothiocyanate, reacts with RNH 3OAc/Al2O3 to give N-allylthiourea.

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