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1234178-32-5

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1234178-32-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1234178-32-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,4,1,7 and 8 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1234178-32:
(9*1)+(8*2)+(7*3)+(6*4)+(5*1)+(4*7)+(3*8)+(2*3)+(1*2)=135
135 % 10 = 5
So 1234178-32-5 is a valid CAS Registry Number.

1234178-32-5Downstream Products

1234178-32-5Relevant academic research and scientific papers

Sonogashira couplings of halo- and epoxy-halo-exo-glycals: Concise entry to carbohydrate-derived enynes

Gomez, Ana M.,Barrio, Aitor,Pedregosa, Ana,Uriel, Clara,Valverde, Serafin,Cristobal Lopez

, p. 2910 - 2920 (2010)

Furanose- and pyranose-derived mono- and dihalo-exo-glycals undergo Sonogashira coupling reactions in the presence of Pd catalysts to give carbohydrate-derived enynes in a completely stereoselective manner. On the other hand, a furanose-derived 2, 3-anhydrohalo-exo-glycal, available from D-mannose in five steps, undergoes Pd0-catalyzed Sonogashira coupling, leading to 2-deoxyenynes.

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