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187091-67-4

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187091-67-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187091-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,0,9 and 1 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 187091-67:
(8*1)+(7*8)+(6*7)+(5*0)+(4*9)+(3*1)+(2*6)+(1*7)=164
164 % 10 = 4
So 187091-67-4 is a valid CAS Registry Number.

187091-67-4Downstream Products

187091-67-4Relevant articles and documents

General entry to asymmetric one-pot [ N + 2 + n ] cyclization for the synthesis of three- to seven-membered azacycloalkanes

Harada, Shingo,Sakai, Takeo,Takasu, Kiyosei,Yamada, Ken-Ichi,Yamamoto, Yasutomo,Tomioka, Kiyoshi

, p. 7212 - 7222 (2012/11/07)

Enantio- and diastereoselective one-pot synthesis of three- to seven-membered cis-azaheterocycles was achieved using a triggered asymmetric conjugate addition reaction of lithium amide with an enoate, followed by alkylation of the resulting lithium enolat

3-Aminopyrrolidines from α-aminoacids: Total synthesis of (+)-nemonapride from D-alanine

Cam, Thuy Hoang,Viet, Hoang Nguyen,Alezra, Valerie,Kouklovsky, Cyrille

, p. 1162 - 1164 (2008/09/18)

(Chemical Equation Presented) The antipsychotic compound nemonapride 1 was synthesized in nine steps from D-alanine 2. The key steps for the synthesis of the 3-aminopyrrolidine moiety include a Birch reduction of a cyclic enaminoester and the reduction of a pyrrolidinone to the pyrrolidine 7. Final coupling with the benzoic acid derivative 9 gave 1 as a single enantio- and diastereomer.

First asymmetric synthesis of (2R,3R)-3-amino-1-benzyl-2-methylpyrrolidine via a highly diastereoselective reductive alkylation

Huang, Pei Qiang,Wang, Si Li,Zheng, Hong,Fei, Xiang Su

, p. 271 - 272 (2007/10/03)

The first asymmetric synthesis of (2R,3R)-3-amino-1-benzyl-2-methylpyrrolidine, the parent diamine of antipsychotic agent, emonapride, from (S)-malic acid was achieved via a highly diastereoselective reductive alkylation.

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