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16909-97-0

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16909-97-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 16909-97-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,0 and 9 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 16909-97:
(7*1)+(6*6)+(5*9)+(4*0)+(3*9)+(2*9)+(1*7)=140
140 % 10 = 0
So 16909-97-0 is a valid CAS Registry Number.

16909-97-0Downstream Products

16909-97-0Relevant articles and documents

STRUCTURE-ACTIVITY RELATIONSHIPS OF PSEUDOGUAIANOLIDES ISOLATED FROM GAILLARDIA PULCHELLA AND THEIR DERIVATIVES

Harimaya, Kenzo,Inayama, Seiichi

, p. 993 - 1008 (2007/10/02)

Three new pseudoguaianolides, 4-epipulchellin (1), 4-epineopulchellin (2) and pulchelloid D (3), were isolated from Gaillardia pulchella together with other eleven pseudoguaianolides and three guaianolides.Fifteen natural sesquiterpene lactones and their thirty one derivatives were tested for cytotoxic activity against KB cell line.Among them, twenty seven compounds were shown to be active (ED50 4 μg/ml).The structure-activity relationships of these sesquiterpene lactones are discussed.

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