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Check Digit Verification of cas no

The CAS Registry Mumber 728-92-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,2 and 8 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 728-92:
(5*7)+(4*2)+(3*8)+(2*9)+(1*2)=87
87 % 10 = 7
So 728-92-7 is a valid CAS Registry Number.

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728-92-7Relevant articles and documents

Ohmic heating as a new efficient process for organic synthesis in water

Pinto, Joana,Silva, Vera L. M.,Silva, Ana M. G.,Silva, Artur M. S.,Costa, José C. S.,Santos, Luís M. N. B. F.,Enes, Roger,Cavaleiro, José A. S.,Vicente, António A. M. O. S.,Teixeira, José A. C.

, p. 970 - 975 (2013/07/26)

A new and efficient process for organic synthesis in aqueous media based on a direct ohmic heating reactor is described. Four representative organic transformations, a Diels-Alder cycloaddition, a nucleophilic substitution, an N-alkylation and a Suzuki cross-coupling reaction, were performed using this process. The results, when compared with those obtained under conventional external heating (oil bath) and microwave heating, showed that ohmic reactor allows faster and more uniform heating and an induced increase of dynamics/mobility of charged species leading in several cases to higher reaction yields and shorter reaction times.

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