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62458-57-5

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62458-57-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 62458-57-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,2,4,5 and 8 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 62458-57:
(7*6)+(6*2)+(5*4)+(4*5)+(3*8)+(2*5)+(1*7)=135
135 % 10 = 5
So 62458-57-5 is a valid CAS Registry Number.

62458-57-5Downstream Products

62458-57-5Relevant articles and documents

Olefin Acylation Reactions on Sesquiterpene Lactones

Kalsi, P. S.,Chhina, Kiranjot

, p. 11 - 14 (2007/10/02)

The olefin acylation of a variety of sesquiterpene lactones with acetic anhydride in the presence of zinc chloride as a catalyst in methylene chloride affords β,γ-unsaturated ketones of any α,β-isomers.The 1,5-cyclodecadiene system present in constunolide (XII) undergoes cyclization followed by acylation and in 11-spirocyclopropyl system cleavage of the cyclopropane occurs.

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