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1309945-34-3

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1309945-34-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1309945-34-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,9,9,4 and 5 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1309945-34:
(9*1)+(8*3)+(7*0)+(6*9)+(5*9)+(4*4)+(3*5)+(2*3)+(1*4)=173
173 % 10 = 3
So 1309945-34-3 is a valid CAS Registry Number.

1309945-34-3Downstream Products

1309945-34-3Relevant articles and documents

Elucidating the formation pathway of the off-flavor compound 6-propylbenzofuran-7-ol

Sakamaki, Kensuke,Ishizaki, Susumu,Ohkubo, Yasutaka,Tateno, Yoshiyuki,Nakanishi, Akira,Fujita, Akira

, p. 9967 - 9973,7 (2020/09/15)

In a previous work, we identified 6-propylbenzofuran-7-ol as an off-flavor compound formed from ascorbic acid and (E)-hex-2-enal in a test apple beverage. In this study, we elucidate the pathway by which 6-propylbenzofuran-7-ol formed. Isotope labeling studies revealed that the propyl group of 6-propylbenzofuran- 7-ol derives from (E)-hex-2-enal and that 6-propylbenzofuran-7-ol contains carbons 2-6 of ascorbic acid. Two compounds, namely, 2,3-dihydro-6- propylbenzofuran-3,7-diol and 3-(2-furoyl)hexanal, were identified as byproducts of a model reaction of ascorbic acid and (E)-hex-2-enal. Each of these compounds was dissolved in an aqueous solution of citric acid and stored at 60 °C for 1 week. After storage, 6-propylbenzofuran-7-ol was detected from a solution of 2,3-dihydro-6-propylbenzofuran-3,7-diol, but not from 3-(2-furoyl)hexanal. 6-Propylbenzofuran-7-ol was formed by isolating tricyclic hemiacetal lactone derived from the Michael addition of ascorbic acid to (E)-hex-2-enal, mixing the tricyclic hemiacetal lactone with the aqueous solution of citric acid, and applying heat. This confirmed that 6-propylbenzofuran-7-ol was formed via the Michael adduct.

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