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97689-63-9

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97689-63-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97689-63-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,6,8 and 9 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 97689-63:
(7*9)+(6*7)+(5*6)+(4*8)+(3*9)+(2*6)+(1*3)=209
209 % 10 = 9
So 97689-63-9 is a valid CAS Registry Number.

97689-63-9Downstream Products

97689-63-9Relevant articles and documents

The first stereoselective total synthesis of lankanolide. Part 2

Hamada, Tatsuo,Kobayashi, Yukinari

, p. 4347 - 4350 (2007/10/03)

The seco-acid derivative designed by conformation calculation and lactonization experiment of model seco-acids was synthesized, and subjected to macrolactonization to afford the lactone derivative. The lankanolide was synthesized via several steps after the lactonization, and the synthetic lankanolide was confirmed to have the same physical data (NMR, mass, IR and αD) as the lankanolide prepared from lankamycin according to the reported method.

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