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228581-79-1

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228581-79-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 228581-79-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,8,5,8 and 1 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 228581-79:
(8*2)+(7*2)+(6*8)+(5*5)+(4*8)+(3*1)+(2*7)+(1*9)=161
161 % 10 = 1
So 228581-79-1 is a valid CAS Registry Number.

228581-79-1Relevant articles and documents

Synthesis of pyrazolopyrimidinones as sildenafil derivatives and sclerotigenin

Heo, Hoon Gu,Yu, Jin,Jillella, Raveendra,Oh, Chang Ho

, p. 1678 - 1687 (2018/06/14)

A series of novel pyrazolo pyrimidinone derivatives (3(a–d), 4(a–d), and 6(a–d)) was synthesized from various pyrazolo amides (2a–d) which are synthesized by the reaction between ethyl 5-amino-3-methyl-1-phenyl-1H-pyrazole-4-carboxylate (1) and various lithium amides. In addition, we also described the synthesis of sclerotigenin drug molecule which has quinazoline moiety from simple 2-nitro benzoic acid with high yields.

Synthesis, biological evaluation, and structure-activity relationships of 2-[2-(benzoylamino)benzoylamino]benzoic acid analogues as inhibitors of adenovirus replication

?berg, Christopher T.,Strand, M?rten,Andersson, Emma K.,Edlund, Karin,Tran, Nam Phuong Nguyen,Mei, Ya-Fang,Wadell, G?ran,Elofsson, Mikael

experimental part, p. 3170 - 3181 (2012/06/04)

2-[2-Benzoylamino)benzoylamino]benzoic acid (1) was previously identified as a potent and nontoxic antiadenoviral compound (Antimicrob. Agents Chemother. 2010, 54, 3871). Here, the potency of 1 was improved over three generations of compounds. We found that the ortho, ortho substituent pattern and the presence of the carboxylic acid of 1 are favorable for this class of compounds and that the direction of the amide bonds (as in 1) is obligatory. Some variability in the N-terminal moiety was tolerated, but benzamides appear to be preferred. The substituents on the middle and C-terminal rings were varied, resulting in two potent inhibitors, 35g and 35j, with EC50 = 0.6 μM and low cell toxicity.

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