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64724-57-8

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64724-57-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 64724-57-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,7,2 and 4 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 64724-57:
(7*6)+(6*4)+(5*7)+(4*2)+(3*4)+(2*5)+(1*7)=138
138 % 10 = 8
So 64724-57-8 is a valid CAS Registry Number.

64724-57-8Relevant articles and documents

Organic Fluorine Compounds. 33. Derivation of Tetrakis(trifluoromethyl)(Dewar Pyrroles) from Tetrakis(trifluoromethyl)(Dewar Thiophene)

Kobayashi, Yoshiro,Ando, Akira,Kawada, Kosuke,Kumadaki, Itsumaro

, p. 2966 - 2968 (2007/10/02)

The 1,3-dipolar cycloadducts of tetrakis(trifluoromethyl)(Dewar thiophene) with azides were photochemically denitrogenated to 2-thia-5-azatricyclo2,5>hexanes which were desulfurized with triphenylphosphine, affording tetrakis(trifluorom

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