Cas 71103-02-1,2,4,4-trimethyl-3-(3-oxo-1-butenylidene)-1-cyclohexene

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Check Digit Verification of cas no

The CAS Registry Mumber 71103-02-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,1,0 and 3 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71103-02:
(7*7)+(6*1)+(5*1)+(4*0)+(3*3)+(2*0)+(1*2)=71
71 % 10 = 1
So 71103-02-1 is a valid CAS Registry Number.

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71103-02-1Relevant academic research and scientific papers

Preparation of δ-Chloro-α-allenyl ketones by acylation of 3-buten-1-ynes

Santelli-Rouvier, Christiane,Lefrere, Sophie,Santelli, Maurice

, p. 6678 - 6684 (1996)

AlCl3-mediated acylation of 3-buten-1-yne derivatives with acyl chlorides yields a mixture of 5-chloro-2,3-pentadienones and 3-chloro-2,4-pentadienones. The proportion of allenyl ketones vs conjugated dienic ketones depends on the substitution

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