Trimethyl- is a chemical prefix derived from the word "trimethylamine," which refers to a group of three methyl groups (CH3) attached to a central atom or molecule. This prefix is commonly found in various organic compounds, such as trimethyl phosphate, trimethylsilyl, and trimethylamine itself. These compounds have diverse applications, including pharmaceuticals, agrochemicals, and materials science. The trimethyl group can significantly influence the properties of the parent molecule, such as solubility, reactivity, and stability, making it an important structural motif in chemical synthesis and research.
The CAS Registry Mumber 19377-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,3,7 and 7 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 19377-81: (7*1)+(6*9)+(5*3)+(4*7)+(3*7)+(2*8)+(1*1)=142 142 % 10 = 2 So 19377-81-2 is a valid CAS Registry Number.