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124907-31-9

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124907-31-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 124907-31-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,4,9,0 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 124907-31:
(8*1)+(7*2)+(6*4)+(5*9)+(4*0)+(3*7)+(2*3)+(1*1)=119
119 % 10 = 9
So 124907-31-9 is a valid CAS Registry Number.

124907-31-9Downstream Products

124907-31-9Relevant articles and documents

Enzymatic optical resolution of dibenzoxepins and its application to an optically active antiallergic agent with thromboxane A2 receptor antagonistic activity.

Kuge,Shioga,Sugaya,Tomioka

, p. 1157 - 1160 (2007/10/02)

Methyl (+/-)-11-(2-hydroxyethyl)thio-6,11-dihydrodibenz[b,e]oxepin- 2- carboxylate (5) was enantio-selectively acylated with acetic anhydride in an organic medium by Lipase Amano P to give methyl (-)-11-(2-acetoxyethyl)thio-6,11-dihydrodibenz[b,e]oxepin-2- carboxylate (8), and the (+)-enantiomer by Lipase Sigma Type VII. Using Lipase Amano P, (+)- and (-)-(5) could be prepared with high optical purity (84-94% e.e.). These products were respectively converted to (+)- and (-)-KW-4099, which had antiallergic activity with complete retention of the optical purity.

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