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(E)-ethyl 3-(2,5-dimethoxyphenyl)but-2-enoate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133571-98-9

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133571-98-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133571-98-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,5,7 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 133571-98:
(8*1)+(7*3)+(6*3)+(5*5)+(4*7)+(3*1)+(2*9)+(1*8)=129
129 % 10 = 9
So 133571-98-9 is a valid CAS Registry Number.

133571-98-9Relevant academic research and scientific papers

Aerobic oxidative coupling of arenes and olefins through a biomimetic approach

Babu, Beneesh P.,Meng, Xu,B?ckvall, Jan-E.

supporting information, p. 4140 - 4145 (2013/04/23)

Arenes and electron-deficient olefins can be oxidatively coupled through a biomimetic Pd(OAc)2-catalyzed transformation. C-H activation of the arene partner is effected under reaction conditions of low catalyst loading, normal oxygen pressure,

The first total synthesis of (±)-herbertenones A and B

Srikrishna, Adusumilli,Ravikumar, Ponneri C.,Krishnan, Hema S.

experimental part, p. 1527 - 1534 (2009/04/03)

The first total synthesis of (±)-herbertenones A and B, employing Claisen rearrangement-metathesis reaction based approaches, is described. Georg Thieme Verlag Stuttgart.

Novel non-classical C9-methyl-5-substituted-2,4-diaminopyrrolo[2,3-d]pyrimidines as potential inhibitors of dihydrofolate reductase and as anti-opportunistic agents

Gangjee, Aleem,Yang, Jie,Queener, Sherry F.

, p. 8341 - 8351 (2007/10/03)

Six novel C9-methyl-5-substituted-2,4-diaminopyrrolo[2,3-d]pyrimidines 18-23 were synthesized as potential inhibitors of dihydrofolate reductase (DHFR) and as anti-opportunistic agents. These compounds represent the only examples of 9-methyl substitution in the carbon-carbon bridge of 2,4-diaminopyrrolo[2,3-d]pyrimidines. The analogs 18-23 were synthesized in a concise eight-step procedure starting from the appropriate commercially available aromatic methyl ketones. The key step involved a Michael addition reaction of 2,4,6-triaminopyrimidine to the appropriate 1-nitroalkene, followed by ring closure of the nitro adducts via a Nef reaction. The compounds were evaluated as inhibitors of DHFR from Pneumocystis carinii (pc), Toxoplasma gondii (tg), Mycobacterium avium (ma) and rat liver (rl). The biological result indicated that some of these analogs are potent inhibitors of DHFR and some have selectivity for pathogen DHFR. Compound 23 was a two digit nanomolar inhibitor of tgDHFR with 9.6-fold selectivity for tgDHFR.

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