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223558-50-7

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223558-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 223558-50-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,3,5,5 and 8 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 223558-50:
(8*2)+(7*2)+(6*3)+(5*5)+(4*5)+(3*8)+(2*5)+(1*0)=127
127 % 10 = 7
So 223558-50-7 is a valid CAS Registry Number.

223558-50-7Relevant articles and documents

Chemical determination of the absolute structures of resveratrol dimers, ampelopsins A, B, D and F

Takaya, Yoshiaki,Yan, Ke-Xu,Terashima, Kenji,Ito, Junko,Niwa, Masatake

, p. 7259 - 7265 (2002)

The absolute configurations of four stilbenedimers, (+)-ampelopsins A, (+)-ampelopsins B, (-)-ampelopsins D and (+)-ampelopsins F were respectively determined on the basis of chemical evidence.

New oligostilbenes having a benzofuran from Vitis vinifera 'Kyohou'

Ito, Junko,Takaya, Yoshiaki,Oshima, Yoshiteru,Niwa, Masatake

, p. 2529 - 2544 (2007/10/03)

Three new oligostilbenes having a benzofuran moiety, viniferifuran, (+)- vitisifuran A and (-)-vitisifuran B, were isolated from Vitis vinifera 'Kyohou'. The structures of these oligostilbenes including the absolute configuration were elucidated by spectroscopic and chemical methods. Furthermore, these were chemically transformed from (+)-ε-viniferin, (+)- vitisin A and (-)-vitisin B, respectively, whose absolute configurations are known.

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