52558-39-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52558-39-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,5,5 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 52558-39:
(7*5)+(6*2)+(5*5)+(4*5)+(3*8)+(2*3)+(1*9)=131
131 % 10 = 1
So 52558-39-1 is a valid CAS Registry Number.
52558-39-1Relevant articles and documents
Process for the preparation of N-substituted aminomethylphosphonic acids
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, (2008/06/13)
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Process for the preparation of N-substituted aminomethylphosphonic acids
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, (2008/06/13)
A process for the preparation of an N-substituted aminomethylphosphonic acid comprising reacting a 2,5-diketopiperazine compound with phosphorous acid and formaldehyde in an acidic medium.