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180782-81-4

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180782-81-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 180782-81-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,0,7,8 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 180782-81:
(8*1)+(7*8)+(6*0)+(5*7)+(4*8)+(3*2)+(2*8)+(1*1)=154
154 % 10 = 4
So 180782-81-4 is a valid CAS Registry Number.

180782-81-4Relevant articles and documents

Total synthesis of tricolorin A

Lu, Shou-Fu,O'Yang, QinQin,Guo, Zhong-Wu,Yu, Biao,Hui, Yong-Zheng

, p. 8400 - 8405 (2007/10/03)

Tricolorin A (1), a structurally amazing resin glycoside with promising bioactivities from Ipomoea tricolor cav. (convolvulaceae), was synthesized in a total of 45 steps, with the longest linear sequence of 20 steps and overall yield of 0.65% from D-mannitol. The AB disscharide 19-membered lactone 2 was constructured by a regioselective macrolactonization using Corey-Nicolaou protocol. The macrolactone tetrasaccharide 33 was realized either by 'one- pot two-step' glycosylation procedure or by a stepwise assembly employing the 'armed-disarmed' glycosylation strategy.

The First Total Synthesis of Tricolorin A

Lu, Shou-Fu,O'yang, QinQin,Guo, Zhong-Wu,Yu, Biao,Hui, Yong-Zheng

, p. 2344 - 2346 (2007/10/03)

Keywords: glycosylations; macrocycles; one-pot reactions; total synthesis; tricolorin A

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