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321747-14-2

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321747-14-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 321747-14-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,7,4 and 7 respectively; the second part has 2 digits, 1 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 321747-14:
(8*3)+(7*2)+(6*1)+(5*7)+(4*4)+(3*7)+(2*1)+(1*4)=122
122 % 10 = 2
So 321747-14-2 is a valid CAS Registry Number.

321747-14-2Downstream Products

321747-14-2Relevant articles and documents

Cytotoxic responses to aromatic ring and configurational variations in α-conidendrin, podophyllotoxin, and sikkimotoxin derivatives

Dantzig,LaLonde,Ramdayal,Shepard,Yanai,Zhang

, p. 180 - 185 (2007/10/03)

Derivatives of α-conidendrin, podophyllotoxin, and sikkimotoxin were prepared to evaluate the cytotoxic contributions of C-4 configuration and pendant and fused arene substitutions. Dimethyl-α-conidendryl alcohol (5), 9-deoxypodophyllol (6), and 9-deoxysikkimol (17) were dehydrated to their respective oxolane derivatives 4, 3, and 9. Diols 5 and 6 were converted via oxabicyclo[3.2.1]octanols 10 and 14 to target oxolanes 8 and 7 where C-4 had been inverted relative to that in 3 and 4. Cytotoxicities of the five oxolanes were determined in two drug-sensitive human leukemia and two multidrug-resistant cell lines expressing P-glycoprotein or multidrug-resistance associated protein (MRP). Changing the pendant arene configuration or replacing a m-methoxy by hydrogen resulted in a 100-fold cytotoxicity loss. Replacing a methylenedioxy group in the fused arene by two methoxy substituents reduced cytotoxicity by 10-fold. Drug-resistant cell lines were equally resistant to compounds 3, 4, 8, and 9 indicating that these four compounds do not serve as substrates of the transport proteins P-glycoprotein and MRP.

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