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187986-23-8

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187986-23-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187986-23-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,9,8 and 6 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 187986-23:
(8*1)+(7*8)+(6*7)+(5*9)+(4*8)+(3*6)+(2*2)+(1*3)=208
208 % 10 = 8
So 187986-23-8 is a valid CAS Registry Number.

187986-23-8Upstream product

187986-23-8Relevant articles and documents

Total synthesis of (-)-dendrobine via α-carbonyl radical cyclization

Sha, Chin-Kang,Chiu, Rei-Torng,Yang, Cheng-Fen,Yao, Nai-Tung,Tseng, Wei-Hong,Liao, Fen-Ling,Wang, Sue-Lein

, p. 4130 - 4135 (1997)

An efficient total synthesis of enantiomerically pure (-)-dendrobine (1) is accomplished based on an α-carbonyl radical cyclization reaction. (S)- carvotanacetone (6) was convened to bicyclic acetal-enone 4 in five steps. Cul-mediated conjugate addition o

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