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7216-47-9

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7216-47-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7216-47-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,1 and 6 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 7216-47:
(6*7)+(5*2)+(4*1)+(3*6)+(2*4)+(1*7)=89
89 % 10 = 9
So 7216-47-9 is a valid CAS Registry Number.

7216-47-9Upstream product

7216-47-9Relevant articles and documents

CONFORMATION AND TAUTOMERIC EQUILIBRIA OF 3-ACYL-3,4-DIHYDROCOUMARINS: A 1H AND 13C NMR STUDY

Simeonov, M. F.,Spassov, S. L.,Bojilova, A.,Ivanov, Chr.,Radeglia, R.

, p. 127 - 134 (1985)

The steric and electronic effects of acyl substitutents COR (R=Me, i-Pr, Ph and t-Bu) upon conformational and keto-enol equilibria in 3-acyl-3,4-dihydrocoumarins have been studied by 1H and 13C NMR spectroscopy.With the increase of effective size of R, pr

Efficient chemoselective reduction of 3-substituted coumarins utilizing ortho-phenylenediamine and benzaldehyde

Risitano, Francesco,Grassi, Giovanni,Foti, Francesco,Bilardo, Cristina

, p. 1311 - 1314 (2007/10/03)

2-Phenylbenzimidazoline, generated in situ from ortho-phenylenediamine and benzaldehyde, is an effective reagent to achieve the chemoselective reduction of the styrenic double bond in 3-substituted coumarins, which takes place in high yield.

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