73082-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 73082-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,3,0,8 and 2 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 73082-09:
(7*7)+(6*3)+(5*0)+(4*8)+(3*2)+(2*0)+(1*9)=114
114 % 10 = 4
So 73082-09-4 is a valid CAS Registry Number.
73082-09-4Relevant articles and documents
Production of 3-pyrrolin-2-ones
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, (2008/06/13)
Pyrrolidin-2-ones are produced by hydrogenation of 3-pyrrolin-2-ones, which latter compounds could not prior to this invention be easily obtained. These 3-pyrrolin-2-ones with various substituents are produced by ring closure of N-aroylmethyl-acetamides.