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158555-49-8

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158555-49-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158555-49-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,5,5 and 5 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 158555-49:
(8*1)+(7*5)+(6*8)+(5*5)+(4*5)+(3*5)+(2*4)+(1*9)=168
168 % 10 = 8
So 158555-49-8 is a valid CAS Registry Number.

158555-49-8Relevant articles and documents

Antineoplastic agents. 579. Synthesis and cancer cell growth evaluation of E-stilstatin 3: A resveratrol structural modification

Pettit, George R.,Melody, Noeleen,Thornhill, Andrew,Knight, John C.,Groy, Thomas L.,Herald, Cherry L.

experimental part, p. 1637 - 1642 (2010/03/31)

As an extension of our earlier structure/activity investigation of resveratrol (1a) cancer cell growth inhibitory activity compared to the structurally related stilbene combretastatin series (e.g., 2a), an efficient synthesis of E-stilstatin 3 (3a) and its phosphate prodrug 3b was completed. The trans-stilbene 3a was obtained using a convergent synthesis employing a Wittig reaction with phosphonium bromide 9 as the key reaction step. Deprotection of the Z-silyl ether 13 gave E-stilstatin 3 (3a) as the exclusive product. The structure and stereochemistry of 3a was confirmed by X-ray crystal structure determination.

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