Cas 1199971-67-9,C<sub>16</sub>H<sub>19</sub>NO

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Check Digit Verification of cas no

The CAS Registry Mumber 1199971-67-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,9,9,9,7 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1199971-67:
(9*1)+(8*1)+(7*9)+(6*9)+(5*9)+(4*7)+(3*1)+(2*6)+(1*7)=229
229 % 10 = 9
So 1199971-67-9 is a valid CAS Registry Number.

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1199971-67-9Relevant academic research and scientific papers

Synthesis of 8-Oxo-3-acetylenic-5,6,7,8-tetrahydroindolizines via sonogashira coupling

Gracia, Stephanie,Metay, Estelle,Pellet-Rostaing, Stephane,Lemaire, Marc

, p. 2617 - 2620 (2009)

A selective alkynylation of 3-bromoindolizinone, involving the first copper-free Sonogashira coupling on pyrrole ring, has been developed to afford 8-oxo-3-acetylenic-5,6,7,8-tetraihydroindolizinone.

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