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151698-49-6

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151698-49-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 151698-49-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,1,6,9 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 151698-49:
(8*1)+(7*5)+(6*1)+(5*6)+(4*9)+(3*8)+(2*4)+(1*9)=156
156 % 10 = 6
So 151698-49-6 is a valid CAS Registry Number.

151698-49-6Relevant articles and documents

Synthesis of 3-substituted isocoumarins and their inhibitory effects on degranulation of RBL-2H3 cells induced by antigen

Kurume, Ai,Kamata, Yasuhiro,Yamashita, Masayuki,Wang, Qilong,Matsuda, Hisashi,Yoshikawa, Masayuki,Kawasaki, Ikuo,Ohta, Shunsaku

experimental part, p. 1264 - 1269 (2009/09/25)

Eleven 3-substituted isocoumarins and a benzylidenephthalide were synthesized through thermal cyclization reaction of δ- and γ-ketoamides, respectively. Subsequent deprotection of the hydroxyl groups of the resulting isocoumarin and benzylidenephthalide compounds afforded thunberginols A, B, and F., respectively, which originated from the processed leaves of Hydrangea macrophylla Seringe var. thunbergii MAKINO. The synthesized isocoumarins and thunberginols were evaluated for their anti-allergic activity, in which thunberginol B exhibited the highest inhibitory potency on the degranulation of RBL-2H3 cells induced by antigen. Structure - activity relationship studies were carried out to determine the necessary substituents on the 3-phenylisocoumarin skeleton for inhibitory activity.

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