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457907-91-4

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457907-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 457907-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,5,7,9,0 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 457907-91:
(8*4)+(7*5)+(6*7)+(5*9)+(4*0)+(3*7)+(2*9)+(1*1)=194
194 % 10 = 4
So 457907-91-4 is a valid CAS Registry Number.

457907-91-4Downstream Products

457907-91-4Relevant articles and documents

An efficient, convenient synthesis of novel medium-sized 13H-dibenzo[d,h][1,3,7]oxadiazecine-8,14-dione macrolides as anticipated antineoplastic agents

Abdel-Hafez, Atef Abdel-Monem

, p. 2297 - 2302 (2007/10/03)

A series of novel medium-sized 13H-dibenzo[d,h][1,3,7]oxadiazecine-8,14-dione macrolides (18-27, 30, 32) were synthesized in an ongoing effort to develop new antineoplastic agents. The synthon 2-(2-aminobenzoylamino)-benzoic acid (7), for preparation of the target compounds, was prepared via the reaction of isatoic anhydride 5 and anthranilic acid 6. Nine compounds (18-20, 24-27, 30, 32) were subjected to National Cancer Institute (NCI) in vitro disease-oriented human cells screening panel assay. Among the compounds tested, 6-benzyl-13H-dibenzo[d,h][1,3,7]oxadiazecine-8,14-dione (26, NSC 721327), bearing the benzyl group at position 6, showed cytotoxic activity and subpanel selectivity against leukemia (CCRF-CEM), colon (HCC-2998), CNS (SNB-75) and melanoma (UACC-257) panels at log10 GI50 (M), compound concentration that inhibits 50% of cell growth, ranging from -4.08 to -4.59.

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