Cas 136639-13-9,C37H30O2

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Check Digit Verification of cas no

The CAS Registry Mumber 136639-13-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,6,3 and 9 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 136639-13:
(8*1)+(7*3)+(6*6)+(5*6)+(4*3)+(3*9)+(2*1)+(1*3)=139
139 % 10 = 9
So 136639-13-9 is a valid CAS Registry Number.

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136639-13-9Relevant academic research and scientific papers

RHODIUM (II) CATALYZED CYCLIZATIONS OF α-DIAZOSUBSTITUTED ALKYNES. A NEW MODE OF REACTION

Pawda, Albert,Austin, David J.,Xu, Simon L.

, p. 4103 - 4106 (1991)

Treatment of several o-alkyne-enyl substituted α-diazoacetophenone derivatives with Rh2(OAc)4 results in cyclopropenyl substituted indenones which undergo a subsequent 2+2-dimerization reaction.

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