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155855-52-0

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155855-52-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155855-52-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,5 and 5 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 155855-52:
(8*1)+(7*5)+(6*5)+(5*8)+(4*5)+(3*5)+(2*5)+(1*2)=160
160 % 10 = 0
So 155855-52-0 is a valid CAS Registry Number.

155855-52-0Relevant articles and documents

An improved approach to chiral cyclopentenone building blocks. Total synthesis of pentenomycin I and neplanocin A

Gallos, John K.,Stathakis, Christos I.,Kotoulas, Stefanos S.,Koumbis, Alexandros E.

, p. 6884 - 6890 (2007/10/03)

An improved approach to enantiomerically pure hydroxylated cyclopentenones is reported here, which involves intramolecular nitrone cycloaddition of sugar-derived chiral pent-4-enals and hex-5-en-ones-2 followed by N-O bond cleavage, quaternization of the amine thus produced, and finally oxidative elimination of the amino group. Synthesis of pentenomycin I and neplanocin A is described following this methodology.

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