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99981-59-6

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99981-59-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99981-59-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,9,8 and 1 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 99981-59:
(7*9)+(6*9)+(5*9)+(4*8)+(3*1)+(2*5)+(1*9)=216
216 % 10 = 6
So 99981-59-6 is a valid CAS Registry Number.

99981-59-6Relevant articles and documents

Synthesis and biological evaluation of 4-hydroxy-5-oxo-2,5-dihydro-1: H -pyrrole-3-carboxamides and their zinc(II) complexes as candidate antidiabetic agents

Saito, Ryota,Tamura, Moe,Kawano, Saya,Yoshikawa, Yutaka,Kato, Akihiro,Sasaki, Kaname,Yasui, Hiroyuki

, p. 5572 - 5581 (2017)

The newly designed 1-(arylmethyl)-2,5-dihydro-4-hydroxy-5-oxo-1H-pyrrole-3-carboxamides (1a-e) were synthesized by using N-tritylated acrylamide as a starting material, and their zinc(ii) complexes (10a-e) were readily prepared by simply mixing 1a-e and ZnSO4 in the presence of LiOH. The aldose reductase (AR) inhibitory activity of 1a-e was evaluated to reveal important structural features for 2,5-dihydro-5-oxo-1H-pyrrole derivatives to exhibit high AR inhibitory activity. The in vitro insulin-mimetic activity of these complexes was evaluated from 50% inhibitory concentrations (IC50) on free fatty acid (FFA) release from isolated rat adipocytes treated with epinephrine. Four out of the five newly synthesized complexes exhibited higher in vitro insulin-mimetic activities than ZnSO4, a positive control. This study proved that the newly synthesized N2O2-coordination-type zinc(ii) complexes based on pyrrole-3-carboxamide derivatives (1a-d) are potential hypoglycemic agents.

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