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23676-21-3

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23676-21-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 23676-21-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,6,7 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 23676-21:
(7*2)+(6*3)+(5*6)+(4*7)+(3*6)+(2*2)+(1*1)=113
113 % 10 = 3
So 23676-21-3 is a valid CAS Registry Number.

23676-21-3Relevant articles and documents

REGIOSPECIFIC CATALYTIC ALKENYLATION OF AROMATIC SUBSTRATES WITH COORDINATED DIENES: REACTIONS ON NAPHTHALENE DERIVATIVES. PRELIMINARY RESULTS ON HETEROAROMATIC SUBSTRATES

Renzi, Augusto De,Lombardi, Angelina,Panunzi, Achille,Saporito, Antonio

, p. 657 - 660 (2007/10/02)

α- and β-naphthol undergo regiospecific alkenylation by 1,1-dimethylallene (DMA) at the OH-adjacent β- and α-positions, respectively, when allowed to react with DMA-Pt(II) complex.A catalytic process can be achieved with conversions higher than 90percent.A Pd(II) complex as promotor and isoprene as alkenylating diene can also be used.Similar results were obtained with N-acetyl-β-naphthylamine.Preliminary results indicated that nitrogen-containing heteroaromatic substrates can afford N-, O- or C-isopentenyl derivatives depending on the particular features of the organic ring.

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