2,2,4,5-Tetramethyl-2H-pyrrole is an organic compound with the molecular formula C8H13N. It is a colorless liquid with a strong, pungent odor. This heterocyclic compound features a pyrrole ring, which is a five-membered ring containing four carbon atoms and one nitrogen atom. The molecule has two methyl groups attached to the nitrogen atom and two additional methyl groups attached to the carbon atoms at positions 2 and 5. 2,2,4,5-Tetramethyl-2H-pyrrole is synthesized through various methods, such as the reaction of 2,2,4,5-tetramethyl-3-oxopentanal with ammonia or the condensation of 2,2,4,5-tetramethyl-3-oxopentanal with ammonium acetate. It is used as a chemical intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other organic compounds. Due to its reactive nature, it is essential to handle 2,2,4,5-tetramethyl-2H-pyrrole with care, following proper safety protocols.
The CAS Registry Mumber 90154-81-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,1,5 and 4 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 90154-81: (7*9)+(6*0)+(5*1)+(4*5)+(3*4)+(2*8)+(1*1)=117 117 % 10 = 7 So 90154-81-7 is a valid CAS Registry Number.