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817210-65-4

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817210-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 817210-65-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,1,7,2,1 and 0 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 817210-65:
(8*8)+(7*1)+(6*7)+(5*2)+(4*1)+(3*0)+(2*6)+(1*5)=144
144 % 10 = 4
So 817210-65-4 is a valid CAS Registry Number.

817210-65-4Relevant articles and documents

NOVEL CYCLOPENTANE DERIVATIVES

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Page/Page column 40-41, (2010/12/29)

The invention relates to a compound of formula (I) wherein A1 and R1 to R5 are defined as in the description and in the claims. The compound of formula (I) can be used as a medicament.

Chiral base route to functionalised cyclopentenyl amines: Formal synthesis of the cyclopentene core of nucleoside Q

Oxenford, Sally J.,O'Brien, Peter,Shipton, Mark R.

, p. 9053 - 9055 (2007/10/03)

A chiral base route to a range of highly functionalised amino cyclopentenes has been developed. The key asymmetric step involved the chiral lithium amide base-mediated rearrangement of a protected trans-4-hydroxy cyclopentene oxide to give an allylic alcohol (88% ee). Subsequent Overman rearrangement gave a protected trans-1,2-aminocyclopentenol whereas Mitsunobu substitution with BocNHNs gave a protected cis-amino cyclopentenol. Both are proven intermediates for natural product synthesis. The protected cis-aminocyclopentenol was transformed in a few steps into a precursor of the cyclopentene core of nucleoside Q, a natural product whose deficiency in animals is related to tumour growth.

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