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169881-55-4

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169881-55-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 169881-55-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,9,8,8 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 169881-55:
(8*1)+(7*6)+(6*9)+(5*8)+(4*8)+(3*1)+(2*5)+(1*5)=194
194 % 10 = 4
So 169881-55-4 is a valid CAS Registry Number.

169881-55-4Downstream Products

169881-55-4Relevant articles and documents

Structure-activity studies on 4-substituted-2-anilinopyrimidine corticotropin releasing factor (CRF) antagonists

Gilligan, Paul J.,He, Liqi,Culp, Steven,Fitzgerald, Lawrence,Tam, S.William,Wong, Y.Nancy

, p. 2321 - 2328 (2007/10/03)

Structure-activity studies around the 4-position of 2-anilinopyrimidine corticotropin releasing factor (CRF) antagonists suggest that there is a large lipophilic cavity in the rat CRF receptor, which can accommodate a wide variety of substituents at this position in contrast to the steric constraints observed for other positions on the 2-anilinopyrimidine core. The chemical syntheses and biological activities of 2-anilinopyrimidine CRF antagonists with carbon-linked substituents at the 4-position are reported. Significant improvements in rat pharmacokinetic parameters were achieved relative to those for the lead structure. While the lead compound 1 (rCRF K(i) = 44 nM) afforded no detectable rat plasma levels after intraperitoneal (ip) or oral (po) dosing, compounds 3-3 (rCRF K(i) = 16 nM) and 3-4 (rCRF K(i) = 59 nM) gave high rat plasma levels at 30 mg/kg (ip, po) (C(max) = 1389 nM and 8581 nM (ip) respectively; C(max) = 113 nM and 988 nM (po), respectively). Furthermore 3-3 and 3-4 had superior bioavailabilities at these doses (59 and 46% (ip), respectively; 2 and 10% (po), respectively). (C) 1999 DuPont Pharmaceuticals Company.

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