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218621-71-7

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218621-71-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 218621-71-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,6,2 and 1 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 218621-71:
(8*2)+(7*1)+(6*8)+(5*6)+(4*2)+(3*1)+(2*7)+(1*1)=127
127 % 10 = 7
So 218621-71-7 is a valid CAS Registry Number.

218621-71-7Relevant articles and documents

Practical and highly stereoselective approaches to the total synthesis of (-)-codonopsinine

Chandrasekhar, Srivari,Saritha, Birudaraju,Jagadeshwar, Vannada,Prakash, Samala Jaya

, p. 1380 - 1386 (2006)

The enantiopure total synthesis of (-)-codonopsinine is described using two effective chiron approaches starting either from commercially available l-xylose or from readily available Garner aldehyde. The key steps included Julia trans-olefination, highly

Total synthesis of the alkaloid (-)-codonopsinine from L-xylose

Chandrasekhar,Jagadeshwar,Prakash, S. Jaya

, p. 3127 - 3129 (2007/10/03)

The enantiopure total synthesis of (-)-codonopsinine is described from commercially available L-xylose in 20% overall yield. The key steps included Julia trans olefination and cascade epoxidation-cyclisation strategies.

5a-Carba-β-D-, 5a-carba-β-L- and 5-thio-β-L-xylopyranosides as new orally active venous antithrombotic agents

Renaut, Patrice,Millet, Jean,Sepulchre, Christiane,Theveniaux, Jocelyne,Barberousse, Veronique,Jeanneret, Vincent,Vogel, Pierre

, p. 2043 - 2052 (2007/10/03)

Mitsunobu displacement of (-)-(1S,4R,5S,6S)-4,5,6-tris{[(tert- butyl)dimethylsilyl]oxy}cyclohex-2-en-1-ol ((-)-12; a (-)-conduritol-F derivative) with 4-ethyl-7-hydroxy-2H-1-benzopyran-2-one (16) provided a 5a- carba-β-D-pyranoside (+)-17 that was convert

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