The chemical "2,2,4,7,7,9-hexamethyl-5-(phenyl-trimethylsilanyloxy-methyl)-1,6-dioxa-4,9-diaza-5λ5-phospha-spiro[4.4]nonane" is a complex organic compound with a unique structure. It features a spiro[4.4]nonane ring system, which is a nine-membered ring with a phosphorus atom at the center, forming a phospha-spiro structure. The molecule is characterized by its hexamethyl groups, which are attached to the carbon atoms at positions 2, 4, 7, and 9. Additionally, it has a phenyl-trimethylsilanyloxy-methyl group attached to the 5th position, which contributes to its reactivity and stability. 2,2,4,7,7,9-hexamethyl-5-(phenyl-trimethylsilanyloxy-methyl)-1,6-dioxa-4,9-diaza-5λ5-phospha-spiro[4.4]nonane is significant in the field of organophosphorus chemistry, potentially useful in the synthesis of various pharmaceuticals and materials due to its unique electronic and steric properties.
The CAS Registry Mumber 61890-51-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,8,9 and 0 respectively; the second part has 2 digits, 5 and 1 respectively. Calculate Digit Verification of CAS Registry Number 61890-51: (7*6)+(6*1)+(5*8)+(4*9)+(3*0)+(2*5)+(1*1)=135 135 % 10 = 5 So 61890-51-5 is a valid CAS Registry Number.