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155530-49-7

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155530-49-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155530-49-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,5,3 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 155530-49:
(8*1)+(7*5)+(6*5)+(5*5)+(4*3)+(3*0)+(2*4)+(1*9)=127
127 % 10 = 7
So 155530-49-7 is a valid CAS Registry Number.

155530-49-7Downstream Products

155530-49-7Relevant articles and documents

Organocatalyzed synthesis of (-)-4-epi-fagomine and the corresponding pipecolic acids

Marjanovic, Jasna,Ferjancic, Zorana,Saicic, Radomir N.

, p. 6784 - 6789 (2015)

The enantioselective synthesis of 4-epi-fagomine was accomplished starting from dioxanone and Cbz-protected benyzlamine, in 4 steps, with 18% overall yield. The key feature of this synthetic approach is the tactical combination of reactions: organocatalyz

Enantioselective synthesis of 2-isoxazolines by a One-flask conjugate addition/oxime-transfer process

Pohjakallio, Antti,Pihko, Petri M.

supporting information; experimental part, p. 3960 - 3964 (2009/11/30)

A study was conducted to demonstrate a new catalytic enantioselective method to prepare 5-substituted 2-isoxazolines that applied a small organic catalyst as the source of chirality and enabled the use of different α-β-unsaturated aldehydes as starting materials. The aldehyde and acetone oxime were added to a solution of amine and benzoic acid in toluene at 0 °C. A precooled solution of H2SO4 in MeOH was added and the resulting solution was stirred for 15 minutes at 0 °C after stirring the reaction mixture at 0 °C for the indicated period of time. A saturated aqueous solution of NaHCO3 was added and the mixture was extracted with EtOAc. The combined organic extracts were dried and concentrated, while the residue was purified by flash chromatography to afford the products. The results show that the presence of a strong acid in the reaction mixture induced the formation of similar catalytic species in the reactions.

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