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5440-24-4

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5440-24-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 5440-24-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,4,4 and 0 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 5440-24:
(6*5)+(5*4)+(4*4)+(3*0)+(2*2)+(1*4)=74
74 % 10 = 4
So 5440-24-4 is a valid CAS Registry Number.
InChI:InChI=1/C7H15NO/c1-5(2)4-7(8)6(3)9/h5,7H,4,8H2,1-3H3

5440-24-4Relevant articles and documents

Pyrrolomorphinans as δ opioid receptor antagonists. The role of steric hindrance in conferring selectivity

Farouz-Grant,Portoghese

, p. 1977 - 1981 (2007/10/03)

A series of 2',3'-disubstituted pyrrolomorphinans (5a-i) were synthesized to determine the role of steric hindrance at μ and γ receptors in promoting δ opioid receptor antagonist selectivity. In smooth muscle preparations, five members of the series (5a-c,e,f) possessed K(e) values in the range 2-15 nM and were 6 selective. Since the unsubstituted analogue 4 possessed δ antagonist potency of similar magnitude, but was not δ selective, it is suggested that the 2',3'substitution confers δ selectivity by hindering the interaction of the pharmacophore at μ and γ receptors, while not affecting δ receptors.

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