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250691-17-9

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250691-17-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 250691-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,0,6,9 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 250691-17:
(8*2)+(7*5)+(6*0)+(5*6)+(4*9)+(3*1)+(2*1)+(1*7)=129
129 % 10 = 9
So 250691-17-9 is a valid CAS Registry Number.

250691-17-9Upstream product

250691-17-9Downstream Products

250691-17-9Relevant articles and documents

4 phosphoric acid ester salt tertiary annular cyanoamidines

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, (2017/02/24)

PROBLEM TO BE SOLVED: To provide a method for producing a quaternary cyclic amidine phosphoric acid ester salt in a short time.SOLUTION: The method for producing a quaternary cyclic amidine phosphoric acid ester salt comprises reacting an amine (A) represented by general formula (1), a salt (D) of a phosphoric acid ester (C) represented by general formula (2), and a diamine monoamide compound (E) represented by general formula (3) in the presence of a solvent (B) having a boiling point higher than the boiling points of the amine (A) and water and a solubility parameter of 8-25 (cal/cm)), and then causing a cyclization dehydration reaction by removing formed water to obtain a quaternary cyclic amidine phosphoric acid ester salt (F).

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