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98958-94-2

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98958-94-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 98958-94-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,9,5 and 8 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 98958-94:
(7*9)+(6*8)+(5*9)+(4*5)+(3*8)+(2*9)+(1*4)=222
222 % 10 = 2
So 98958-94-2 is a valid CAS Registry Number.

98958-94-2Downstream Products

98958-94-2Relevant articles and documents

Studies toward the Syntheses of Functionally Substituted γ-Butyrolactones and Spiro-γ-butyrolactones and Their Reaction with Strong Acids: A Novel Route to α-Pyrones

Mandal, A.K.,Jawalkar, D.G.

, p. 2364 - 2369 (1989)

A general strategy for the conversion of 5-keto carboxylic acids, 6 (via their enol-lactones 7), to a variety of γ-lactones, 8a-c, and spiro-γ-lactones, 8d-g, is described.Lactones 8b and 8d,e may be further converted into the corresponding α-pyrones, 17b and 17d,e, respectively, in the presence of strong acids.

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