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179618-59-8

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179618-59-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 179618-59-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,9,6,1 and 8 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 179618-59:
(8*1)+(7*7)+(6*9)+(5*6)+(4*1)+(3*8)+(2*5)+(1*9)=188
188 % 10 = 8
So 179618-59-8 is a valid CAS Registry Number.

179618-59-8Relevant articles and documents

Asymmetric total synthesis of curacin A

Onoda, Toshihiko,Shirai, Ryuichi,Koiso, Yukiko,Iwasaki, Shigeo

, p. 4397 - 4400 (1996)

Curacin A (1), a novel antimitotic agent, was synthesized in a highly stereo-controlled manner. The key steps were (1) an asymmetric allylation using a chiral allyltitanium reagent and a double-asymmetric Simmons-Smith cyclopropanation to introduce three chiral centers, (2) Wittig and Wittig- Horner reactions to construct the C(3-4) and C(7-10) alkenes, and (3) a direct conversion of the thiazolidine to the thiazoline.

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