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19956-59-3

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19956-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19956-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,5 and 6 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19956-59:
(7*1)+(6*9)+(5*9)+(4*5)+(3*6)+(2*5)+(1*9)=163
163 % 10 = 3
So 19956-59-3 is a valid CAS Registry Number.

19956-59-3Upstream product

19956-59-3Relevant academic research and scientific papers

SESQUITERPENE LACTONES FROM CARPESIUM ABROTANOIDES

Maruyama, Masao,Karube, Akio,Sato, Kiyoko

, p. 2773 - 2774 (1983)

Carabrol, ivaxillin and 11(13)-dehydroivaxillin were obtained from Carpesium abrotanoides, and the structures of carabrol and 11(13)-dehydroivaxillin were elucidated.The structure of eriolin was also elucidated by interconversion from 11(13)-dehydroivaxillin. - Key Word Index: Carpesium abrotanoides; Compositae; carabrol; ivaxillin; 11(13)-dehydroivaxillin; eriolin.

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