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73971-98-9

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73971-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 73971-98-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,9,7 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 73971-98:
(7*7)+(6*3)+(5*9)+(4*7)+(3*1)+(2*9)+(1*8)=169
169 % 10 = 9
So 73971-98-9 is a valid CAS Registry Number.

73971-98-9Relevant articles and documents

Biogenesis of Epidithiadiketopiperazines. Synthesis of Three Isomeric (β-Aminoethyl)benzene Oxides

Rastetter, William H.,Nummy, Larry J.

, p. 3149 - 3155 (2007/10/02)

Three isomeric amine-substituted arene oxides have been synthesized to serve as models for the postulated involvement of amino acid derived arene oxides during the biosyntheses of various epidithiadiketopiperazines.No biogenetic-type reactivity was noted for the arene oxides.In all three cases aromatization rather than amine/epoxide cyclization was observed.The failure to duplicate the presumed in vivo reactivity of aminoarene oxides is discussed in terms of possible enzyme-mediated cyclizations in the natural systems.

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