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1202646-74-9

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1202646-74-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1202646-74-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,0,2,6,4 and 6 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1202646-74:
(9*1)+(8*2)+(7*0)+(6*2)+(5*6)+(4*4)+(3*6)+(2*7)+(1*4)=119
119 % 10 = 9
So 1202646-74-9 is a valid CAS Registry Number.

1202646-74-9Downstream Products

1202646-74-9Relevant articles and documents

Diastereoselective synthesis of 4-hydroxytetralones via a cascade Stetter-aldol reaction catalyzed by N-heterocyclic carbenes

Sun, Fang-Gang,Huang, Xue-Liang,Ye, Song

, p. 273 - 276 (2010)

(Chemical Equation Presented) A cascade Stetter-aldol reaction of phthalaldehyde and Michael acceptors catalyzed by N-heterocyclic carbenes was developed. The corresponding 3-substituted-4-hydroxytetralones were obtained in moderate to good yields with good trans-selectivities. On the contrary, the separated Stetter reaction followed by aldol reaction gave 3-substituted-4- hydroxytetralones with good cis-selectivity. Oxidation or dehydration of the resulted 4-hydroxytetralone gave the corresponding naphthalenediol or naphthol derivative, respectively, in good yield.

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