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77756-17-3

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77756-17-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77756-17-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,7,5 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77756-17:
(7*7)+(6*7)+(5*7)+(4*5)+(3*6)+(2*1)+(1*7)=173
173 % 10 = 3
So 77756-17-3 is a valid CAS Registry Number.

77756-17-3Relevant articles and documents

A short synthesis of biologically active lignan analogues

Kamlage,Sefkow,Pool-Zobel,Peter

, p. 331 - 332 (2007/10/03)

β-Benzyl-γ-butyrolactones were synthesized in four transition metal catalysed reactions from butynediol, and alkylated to afford new, biologically active lignan analogues.

Tri-n-butyltin Hydride assisted Highly Stereoselective Lactonisation of Homoallylic Xanthates

Yamamoto, Makoto,Uruma, Takashi,Iwasa, Seiji,Kohmoto, Shigeo,Yamada, Kazutoshi

, p. 1265 - 1267 (2007/10/02)

A highly stereo- and regio-selective radical cyclisation of homoallylic xanthate esters is presented and the reaction is applied to the synthesis of some ring fused lactones.

OXIDATIVE COUPLING. II. THE TOTAL SYNTHESIS OF ENTEROLACTONE

Belletire, J. L.,Fremont, S. L.

, p. 127 - 130 (2007/10/02)

Oxidative coupling of 3-methoxyhydrocinnamic acid dianion with molecular iodine forms the key step in an efficient synthesis of enterolactone.

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