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51743-69-2

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51743-69-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 51743-69-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,7,4 and 3 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 51743-69:
(7*5)+(6*1)+(5*7)+(4*4)+(3*3)+(2*6)+(1*9)=122
122 % 10 = 2
So 51743-69-2 is a valid CAS Registry Number.

51743-69-2Relevant articles and documents

Synthetic studies directed toward ergot alkaloids, (±)-6,7-secoagroclavine, (±)-chanoclavine-1, (±)-chanoclavine-II, and (±)-agroclavine-I, by an efficient and common synthetic route

Yamada, Fumio,Makita, Yoshihiko,Somei, Masanori

, p. 599 - 620 (2008/03/12)

Novel three synthetic routes to (±)-6,7-secoagroclavine were developed from either methyl 3-(3-formylindol-4-yl)acrylate, indole-4-carbaldehyde, or 4-iodoindole-3-carbaldehyde. The total syntheses of (±)-chanoclavine-I, (±)-chanoclavine-II, and (±)-agroclavine-I were accomplished as well from the synthetic intermediates involved in the synthesis of (±)-6,7-secoagroclavine, culminating in establishing an efficient and common synthetic method for ergot alkaloids.

SHORT-STEP SYNTHESIS OF THE ERGOT ALKALOIDS, (+/-)-NORCHANOCLAVINE-I, (+/-)-CHANOCLAVINE-I, (+/-)-ISOCHANOCLAVINE-I, and (+/-)-AGROCLAVINE

Somei, Masanori,Makita, Yoshihiko,Yamada, Fumio

, p. 948 - 950 (2007/10/02)

The simple total synthesis of the ergot alkaloids, (+/-)-norchanoclavine-I, (+/-)-chanoclavine-I, (+/-)-isochanoclavine-I, and (+/-)-agroclavine was achieved by a practical and common synthesis method.A new regio-selective oxidation of the Z-methyl group of the isoprenyl system with selenium dioxide is described.Keywords - (+/-)-norchanoclavine-I; (+/-)-norisochanoclavine-I; (+/-)-chanoclavine-I; (+/-)-isochanoclavine-I; (+/-)-agroclavine; ergot alkaloid; total synthesis; common synthesis method; new oxidation

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