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171335-71-0

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171335-71-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 171335-71-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,1,3,3 and 5 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 171335-71:
(8*1)+(7*7)+(6*1)+(5*3)+(4*3)+(3*5)+(2*7)+(1*1)=120
120 % 10 = 0
So 171335-71-0 is a valid CAS Registry Number.

171335-71-0Relevant articles and documents

Optically Active trans-Diethylstilbesterol Oxide Monomethyl Ether

Oda, Taiko,Watanuki, Mitsuru,Sato, Yoshihiro,Hata, Tadashi

, p. 810 - 815 (2007/10/02)

Diethylstilbestrol oxide is a metabolic intermediate of diethylstilbestrol.In order to elucidate the effects of optically active diethylstilbestrol oxides on microtubule assembly and cell culture, we synthesized (+/-)-diethylstilbestrol oxide (2a).Since 2a was not stable under moderately acidic and basic conditions, the monomethyl ether (2c) of diethylstilbestrol oxide, which was more stable than 2a, was separated by high-pressure liquid chromatography using a chiral column.The mono (4-bromobenzoate) of (-)-2c was analyzed by X-ray crystallography and its absolute structure was determined as C (1R,1'R).Keywords: optical resolution; diethylstilbestrol oxide monomethyl ether; absolute structure; X-ray crystallography; pig liver esterase; diethylstilbestrol oxide

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