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442521-49-5

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442521-49-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 442521-49-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,2,5,2 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 442521-49:
(8*4)+(7*4)+(6*2)+(5*5)+(4*2)+(3*1)+(2*4)+(1*9)=125
125 % 10 = 5
So 442521-49-5 is a valid CAS Registry Number.

442521-49-5Relevant articles and documents

Synthesis, conformation and PKC isozyme surrogate binding of new lactone analogues of benzolactam-V8s

Nakagawa, Yu,Irie, Kazuhiro,Masuda, Akiko,Ohigashi, Hajime

, p. 2101 - 2115 (2007/10/03)

To investigate the role of the amide hydrogen of benzolactam-V8s (1-3) on protein kinase C (PKC) isozyme binding, new lactone analogues of benzolactam-V8s with hydrophobic side chains at positions 8 and/or 9 (5-8) were synthesized. The PKC binding affinities of 8- and 9-decylbenzolactone-V8 (5,6) were much lower than those of 8- and 9-decylbenzolactam-V8 (2,3), respectively, indicating that the amide hydrogen of benzolactam-V8s plays a critical role in PKC binding. 8-Decylbenzolactam-V8 (2) showed lower binding affinities to all PKC isozymes compared with those of 9-decylbenzolactam-V8 (3). The binding affinities of 8-substituted benzolactones (5,7,8) were also lower than those of 9-decylbenzolactone-V8 (6), but their PKC isozyme selectivity was higher than those of 2, 3 and 6. 8-Decybenzolactone-V8 (5) exhibited the most significant η-C1B selectivity among the four benzolactones (5-8) synthesized in this study.

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