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109468-23-7

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109468-23-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 109468-23-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,4,6 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 109468-23:
(8*1)+(7*0)+(6*9)+(5*4)+(4*6)+(3*8)+(2*2)+(1*3)=137
137 % 10 = 7
So 109468-23-7 is a valid CAS Registry Number.

109468-23-7Relevant articles and documents

Concise, stereodivergent and highly stereoselective synthesis of cis-and trans-2-substituted 3-hydroxypiperidines-development of a phosphite-driven cyclodehydration

Huy, Peter H.,Westphal, Julia C.,Koskinen, Ari M.P.

supporting information, p. 369 - 383 (2014/03/21)

A concise (5 to 6 steps), stereodivergent, highly diastereoselective (dr up to >19:1 for both stereoisomers) and scalable synthesis (up to 14 g) of cis- and trans-2-substituted 3-piperidinols, a core motif in numerous bioactive compounds, is presented. This sequence allowed an efficient synthesis of the NK-1 inhibitor L-733,060 in 8 steps. Additionally, a cyclodehydration-realizing simple triethylphosphite as a substitute for triphenylphosphine is developed. Here the stoichiometric oxidized P(V)-byproduct (triethylphosphate) is easily removed during the work up through saponification overcoming separation difficulties usually associated to triphenylphosphine oxide.

Enantiomerically Enriched t-BOC-Protected α-Aminoorganolithiums: Preparation and Configurational Stability

Chong, J. Michael,Park, Sheldon B.

, p. 2220 - 2222 (2007/10/02)

Enantiomerically enriched t-BOC-protected α-aminoorganolithiums, generated by Sn-Li exchange, are configurationally stable at -95 deg C and may be trapped with complete retention of configuration.

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