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90674-85-4

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90674-85-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 90674-85-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,6,7 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90674-85:
(7*9)+(6*0)+(5*6)+(4*7)+(3*4)+(2*8)+(1*5)=154
154 % 10 = 4
So 90674-85-4 is a valid CAS Registry Number.

90674-85-4Downstream Products

90674-85-4Relevant articles and documents

A new synthesis of γ-butyrolactones via AuCl3- or Hg(II)-catalyzed intramolecular hydroalkoxylation of 4-bromo-3-yn-1-ols

Reddy, Maddi Sridhar,Kumar, Yalla Kiran,Thirupathi, Nuligonda

, p. 824 - 827 (2012/04/05)

An efficient conversion of 4-bromo-3-yn-1-ols to γ-butyrolactones via AuCl3-catalyzed electrophilic cyclization (hydroxyl-assisted regioselective hydration) in wet toluene is described. Various secondary and tertiary alcohols including benzylic systems were found to be equally reactive with moderate to excellent yields obtained in all cases.

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