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1520942-75-9

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1520942-75-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1520942-75-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,5,2,0,9,4 and 2 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1520942-75:
(9*1)+(8*5)+(7*2)+(6*0)+(5*9)+(4*4)+(3*2)+(2*7)+(1*5)=149
149 % 10 = 9
So 1520942-75-9 is a valid CAS Registry Number.

1520942-75-9Downstream Products

1520942-75-9Relevant academic research and scientific papers

A concise cross-metathesis route to enantiopure 1-azaspirocycle S

Wang, Zhen James,Spiccia, Nicolas Daniel,Gartshore, Christopher James,Illesinghe, Jayamini,Jackson, William Roy,Robinson, Andrea Jane

, p. 3118 - 3124 (2013)

A concise synthesis of spiropyrrolidines and spiropiperidines has been developed. The approach employs a ruthenium-alkylidene-catalysed cross-metathesis reaction of enantiopure N-protected allylglycine with methylenecycloalkanes. The resultant alkene intermediates can then undergo a tandem acid-catalysed cyclisation to form spiropyrrolidines. Ring expansion of the spiropyrrolidine system, via an aziridinium intermediate, grants access to the homologous spiropiperidine ring system with excellent stereoretention. Georg Thieme Verlag Stuttgart New York.

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