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25937-19-3

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25937-19-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 25937-19-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,9,3 and 7 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 25937-19:
(7*2)+(6*5)+(5*9)+(4*3)+(3*7)+(2*1)+(1*9)=133
133 % 10 = 3
So 25937-19-3 is a valid CAS Registry Number.

25937-19-3Downstream Products

25937-19-3Relevant articles and documents

Operationally Simple and Selective One-Pot Synthesis of Hydroxyphenones: A Facile Access to SNARF Dyes

Richter, Celin,Ernsting, Nikolaus P.,Mahrwald, Rainer

, p. 1217 - 1225 (2016/05/11)

High selectivity is observed during a Friedel-Crafts acylation/demethylation cascade. In contrast to this cascade, oxygen-containing acylating reagents do not undergo the demethylation step. By the methodology elaborated here, an access is provided to important intermediates for the total synthesis of seminaphthorhodafluor (SNARF) dyes.

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