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1038713-54-0

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1038713-54-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1038713-54-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,3,8,7,1 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1038713-54:
(9*1)+(8*0)+(7*3)+(6*8)+(5*7)+(4*1)+(3*3)+(2*5)+(1*4)=140
140 % 10 = 0
So 1038713-54-0 is a valid CAS Registry Number.

1038713-54-0Downstream Products

1038713-54-0Relevant articles and documents

Structure-based optimization and biological evaluation of human 20α-hydroxysteroid dehydrogenase (AKR1C1) salicylic acid-based inhibitors

El-Kabbani, Ossama,Scammells, Peter J.,Day, Tom,Dhagat, Urmi,Endo, Satoshi,Matsunaga, Toshiyuki,Soda, Midori,Hara, Akira

, p. 5309 - 5317 (2010)

The tertiary structure of the Leu308Val mutant of human 20α-hydroxysteroid dehydrogenase (AKR1C1) in complex with the inhibitor 3,5-dichlorosalicylic acid (DCL) has been determined. Structures and kinetic properties of the wild-type and mutant enzymes indicate that Leu308 is a selectivity determinant for inhibitor binding. The Leu308Val mutation resulted in 13-fold and 3-fold reductions in the inhibitory potencies of DCL and 3-bromo-5-phenylsalicylic acid (BPSA), respectively. The replacement of Leu308 with an alanine resulted in 473-fold and 27-fold reductions in the potencies for DCL and BPSA, respectively. In our attempts to optimize inhibitor potency and selectivity we synthesized 5-substituted 3-chlorosalicylic acid derivatives, of which the most potent compound, 3-chloro-5-phenylsalicylic acid (Ki = 0.86 nM), was 24-fold more selective for AKR1C1 relative to the structurally similar 3α-hydroxysteroid dehydrogenase (AKR1C2). Furthermore, the compound inhibited the metabolism of progesterone in AKR1C1-overexpressed cells with an IC50 value equal to 100 nM.

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