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78603-59-5

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78603-59-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78603-59-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,6,0 and 3 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 78603-59:
(7*7)+(6*8)+(5*6)+(4*0)+(3*3)+(2*5)+(1*9)=155
155 % 10 = 5
So 78603-59-5 is a valid CAS Registry Number.

78603-59-5Downstream Products

78603-59-5Relevant articles and documents

Stereocontrolled and efficient total synthesis of (-)-stephanotic acid methyl ester and (-)-celogentin C

Hu, Weimin,Zhang, Fengying,Xu, Zhengren,Liu, Qiang,Cui, Yuxin,Jia, Yanxing

, p. 956 - 959 (2010)

(Figure Presented) A highly stereocontrolled and efficient total synthesis of (-)-stephanotlc acid methyl ester and (-)-celogentin C was accomplished In longest linear 14 steps (4.6% overall yield) and In 20 steps (1.6% overall yield) from L-tryptophan, respectively. Highlights of the synthesis include a tandem asymmetric Michael addition/bromination/azidation strategy for a ready access to the leucine-tryptophan moiety (Leu-Trp linkage) and an oxidative coupling reaction to form the indole-imidazole linkage.

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