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959044-31-6

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959044-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 959044-31-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,5,9,0,4 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 959044-31:
(8*9)+(7*5)+(6*9)+(5*0)+(4*4)+(3*4)+(2*3)+(1*1)=196
196 % 10 = 6
So 959044-31-6 is a valid CAS Registry Number.

959044-31-6Downstream Products

959044-31-6Relevant articles and documents

Titration of nonstabilized diazoalkane solutions by fluorine NMR

Rendina, Victor L.,Kingsbury, Jason S.

experimental part, p. 1181 - 1185 (2012/03/12)

A new protocol for titrating nonstabilized diazoalkane solutions by quantitative 19F NMR is reported. An excess of 2-fluorobenzoic acid dissolved in CDCl3 is treated with the diazoalkane solution at a low temperature, immediately forming the corresponding 2-fluorobenzoate ester upon warming. A significant difference in the 19F chemical shift between the ester and acid is seen, allowing facile and accurate integration to determine titer. The procedure is safe, rapid, and indicates the active diazoalkane concentration with high precision.

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