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649737-05-3

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649737-05-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 649737-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,9,7,3 and 7 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 649737-05:
(8*6)+(7*4)+(6*9)+(5*7)+(4*3)+(3*7)+(2*0)+(1*5)=203
203 % 10 = 3
So 649737-05-3 is a valid CAS Registry Number.

649737-05-3Downstream Products

649737-05-3Relevant articles and documents

Visible Light-Mediated Coupling of Thioureas and 1,3-Dicarbonyls: Towards a Leaving Group-Free Synthesis of Aminothiazoles

Roslan, Irwan Iskandar,Ng, Kian-Hong,Gondal, Mohammed Ashraf,Basheer, Chanbasha,Dastageer, Mohamed A.,Jaenicke, Stephan,Chuah, Gaik-Khuan

, p. 1584 - 1589 (2018)

A synthesis of aminothiazoles from various 1,3-dicarbonyls and thioureas without a leaving group has been developed. The reaction is photocatalyzed by tetraiodofluorescein, an organic dye. Under irradiation with green LEDs, a sulfur radical is generated in situ from thiourea, followed by addition to the enol tautomer, forming the aminothiazole backbone. This novel strategy provides a greener alternative to the traditional leaving group protocols, with excellent atom economy. (Figure presented.).

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