90774-45-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90774-45-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,7,7 and 4 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 90774-45:
(7*9)+(6*0)+(5*7)+(4*7)+(3*4)+(2*4)+(1*5)=151
151 % 10 = 1
So 90774-45-1 is a valid CAS Registry Number.
90774-45-1Relevant articles and documents
1H NMR Long-Range Coupling in the Assignments of Stereochemistry to 4-Imidazolidinones
Polonski, T.
, p. 176 - 179 (1984)
Long-range coupling were observed between protons attached to C-2 and C-5 of the imidazolidinone ring.Since 4J(25) has a measurable value only for trans arrangement of H-2 and H-5, this coupling can be utilized as an easy method of identification of 4-imidazolidinone stereoisomers.
