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1428556-50-6

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1428556-50-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1428556-50-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,8,5,5 and 6 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1428556-50:
(9*1)+(8*4)+(7*2)+(6*8)+(5*5)+(4*5)+(3*6)+(2*5)+(1*0)=176
176 % 10 = 6
So 1428556-50-6 is a valid CAS Registry Number.

1428556-50-6Relevant articles and documents

Discovery and structure-activity relationship of thienopyridine derivatives as bone anabolic agents

Saito, Keiji,Nakao, Akira,Shinozuka, Tsuyoshi,Shimada, Kousei,Matsui, Satoshi,Oizumi, Kiyoshi,Yano, Kazuki,Ohata, Keiko,Nakai, Daisuke,Nagai, Yoko,Naito, Satoru

, p. 1628 - 1642 (2013/04/24)

A cell-based assay was performed for the discovery of novel bone anabolic agents. Alkaline phosphatase (ALPase) activity of ST2 cells was utilized as an indicator of osteoblastic differentiation, and thienopyridine derivative 1 was identified as a hit compound. 3-Aminothieno[2,3-b]pyridine-2-carboxamide was confirmed to be a necessary core structure for the enhancement of ALPase activity, and then optimization of the C4-substituent on the thienopyridine ring was carried out. Introduction of cyclic amino groups to the C4-position of the thienopyridine ring improved the activity. Especially, N-phenyl-homopiperazine derivatives were found to be strong enhancers of ALPase among this new series. Furthermore, 3-amino-4-(4-phenyl-1,4-diazepan-1-yl)thieno[2,3-b]pyridine-2- carboxamide (15k) was orally administered to ovariectomized (OVX) rats over 6 weeks for evaluating the effects on areal bone mineral density (aBMD), and statistically significant improvements in aBMD were observed from the dosage of 10 mg/kg/day.

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