52661-99-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52661-99-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,6,6 and 1 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 52661-99:
(7*5)+(6*2)+(5*6)+(4*6)+(3*1)+(2*9)+(1*9)=131
131 % 10 = 1
So 52661-99-1 is a valid CAS Registry Number.
52661-99-1Relevant articles and documents
2,5-Dioxopiperazine compound and processes for preparation thereof
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, (2008/06/13)
2,5-Dioxopiperazine-3-acetamide is prepared by reacting a dialkyl-L-aspartate with monochloroacetic acid, monochloroacetyl chloride or monochloroacetic acid anhydride, and then treating the resulting dialkyl chloroacetyl-L-aspartate with ammonia.
