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147666-82-8

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147666-82-8 Usage

Definition

ChEBI: An isobenzofuranone that is 2-benzofuran-1(3H)-one substituted by a hydroxy group at position 7 and a 3,4-dihydroxybenzylidene group at position 3. It has been isolated from the roots of Scorzonera judaica.

Check Digit Verification of cas no

The CAS Registry Mumber 147666-82-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,7,6,6 and 6 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 147666-82:
(8*1)+(7*4)+(6*7)+(5*6)+(4*6)+(3*6)+(2*8)+(1*2)=168
168 % 10 = 8
So 147666-82-8 is a valid CAS Registry Number.
InChI:InChI=1/C15H10O5/c16-10-5-4-8(6-12(10)18)7-13-9-2-1-3-11(17)14(9)15(19)20-13/h1-7,16-18H/b13-7-

147666-82-8Relevant articles and documents

One-step synthesis of isocoumarins and 3-benzylidenephthalides via ligandless pd-catalyzed oxidative coupling of benzoic acids and vinylarenes

Nandi, Debkumar,Ghosh, Debalina,Chen, Shih-Ji,Kuo, Bing-Chiuan,Wang, Nancy M.,Lee, Hon Man

, p. 3445 - 3451 (2013/08/14)

A straightforward synthetic method for the preparation of isocoumarins and 3-benzylidenephthalides via C-H olefination and oxidative coupling of readily available benzoic acids and vinylarenes was developed. The directing effect of the substituents on the benzoic acid allows for the synthesis of both types of lactone in pure form.

Facile synthesis of thunberginol F

Wang, Zhi-Wei,Li, Shao-Bai,Li, Yu-Lin

, p. 363 - 364 (2007/10/03)

A new and convenient synthesis of (Z)-3-(3,4-dihydroxybenzylidene)-7-hydroxyphthalide (5) is described starting from 3-hydroxy-7-methoxyphthalide (1).

Synthesis of 3-substituted isocoumarins and related natural products

Ohta,Kamata,Inagaki,Masuda,Yamamoto,Yamashita,Kawasaki

, p. 1188 - 1190 (2007/10/02)

Several N,N-diethyl-2-acylmethylbenzamides (6) were prepared from N,N- diethyl-2-toluamides (4), and the ketoamides (6) were easily cyclized to the corresponding 3-substituted isocoumarins (8) by heating in acetic acid or xylene. This simple procedure was

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