2,2-dimethylpropanamide-d9, also known as deuterated 2,2-dimethylpropanamide, is a chemical compound that is structurally similar to 2,2-dimethylpropanamide but with nine deuterium atoms replacing hydrogen atoms. 2,2-dimethylpropanamide-d9 is primarily used as an internal standard in analytical chemistry, particularly in mass spectrometry and nuclear magnetic resonance (NMR) spectroscopy, to help calibrate instruments and improve the accuracy of measurements. The presence of deuterium, a stable isotope of hydrogen, provides a distinct mass difference that allows for better differentiation and quantification of the target compound in complex mixtures.
The CAS Registry Mumber 6045-07-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,0,4 and 5 respectively; the second part has 2 digits, 0 and 7 respectively. Calculate Digit Verification of CAS Registry Number 6045-07: (6*6)+(5*0)+(4*4)+(3*5)+(2*0)+(1*7)=74 74 % 10 = 4 So 6045-07-4 is a valid CAS Registry Number.