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97546-25-3

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97546-25-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 97546-25-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,5,4 and 6 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 97546-25:
(7*9)+(6*7)+(5*5)+(4*4)+(3*6)+(2*2)+(1*5)=173
173 % 10 = 3
So 97546-25-3 is a valid CAS Registry Number.

97546-25-3Relevant articles and documents

Efficient synthesis of 19-31 membered macrocyclic tetralactones via ring closing metathesis in ionic liquids

Muthusamy, Sengodagounder,Azhagan, Datschnamoorthy

scheme or table, p. 8196 - 8202 (2010/11/02)

The ring closing metathesis reaction in the presence of Grubbs catalyst was demonstrated using several ionic liquids to synthesize a range of macrocyclic tetralactones having ring size of 19 to 31 membered with different spacers. The ionic liquid [mmim][PF6] was found to be an excellent solvent and the recovery of the catalyst was demonstrated. X-ray analysis of a representative macrocyclic tetralactone was also reported.

Desymmetrization of cyclic anhydrides using dihydroxy compounds: Selective synthesis of macrocyclic tetralactones

Muthusamy, Sengodagounder,Gnanaprakasam, Boopathy,Suresh, Eringathodi

, p. 1913 - 1916 (2007/10/03)

The desymmetrization of cyclic anhydrides is carried out using dihydroxy compounds. A mild route to synthesize fused saturated/unsaturated macrocyclic tetralactones with different ring sizes (20-34) having a wide variety of spacers is described. The structure is confirmed by the representative single-crystal X-ray analysis. The multiple reduction of unsaturated macrocyclic tetralactones is also illustrated. This method is mild, selective, and efficient and achieves high yield.

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