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188340-60-5

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188340-60-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188340-60-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,3,4 and 0 respectively; the second part has 2 digits, 6 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 188340-60:
(8*1)+(7*8)+(6*8)+(5*3)+(4*4)+(3*0)+(2*6)+(1*0)=155
155 % 10 = 5
So 188340-60-5 is a valid CAS Registry Number.

188340-60-5Relevant articles and documents

The Pharmacological Heterogeneity of Nepenthone Analogs in Conferring Highly Selective and Potent κ-Opioid Agonistic Activities

Li, Wei,Long, Jian-Dong,Qian, Yuan-Yuan,Long, Yu,Xu, Xue-Jun,Wang, Yu-Jun,Shen, Qing,Wang, Zuo-Neng,Yang, Xi-Cheng,Xiao, Li,Sun, Hong-Peng,Xu, Yu-Long,Chen, Yi-Yi,Xie, Qiong,Wang, Yong-Hui,Shao, Li-Ming,Liu, Jing-Gen,Qiu, Zhui-Bai,Fu, Wei

, p. 766 - 776 (2017/04/26)

To develop novel analgesics with no side effects or less side effects than traditional opioids is highly demanded to treat opioid receptor mediated pain and addiction issues. Recently, κ-opioid receptor (KOR) has been established as an attractive target,

New nepenthone and thevinone derivatives

Marton, Janos,Simon, Csaba,Hosztafi, Sandor,Szabo, Zoltan,Marki, Arpad,Borsodi, Anna,Makleit, Sandor

, p. 369 - 382 (2007/10/03)

The diastereoselective reaction of thevinone (2a) and nepenthone (2c) and their dihydro derivatives (2b and d) with Grignard reagents afforded new N-substituted (20S)- and (20R)-phenyI-6,14-ethenomorphinan derivatives (6a-y). The Grignard reaction of the N-substituted-N-demethyl derivatives 4a-f and 4m-r with methylmagnesium iodide resulted in the (20R)-phenyl tertiary alcohols 5a-f and 5m-r, respectively, but the conversion of 4g-l and that of the N-substituted-dihydrothevinone derivatives with phenylmagnesium bromide afforded the (20S)-phenyl derivatives 5g-l and 5s-y, respectively. The N-cyclopropylmethyl-, N-β-phenylethyl-, and N-propyl derivatives were prepared by the 3-O-demethylation of compounds 5. For the synthesis of the N-allyl-, N-dimethylallyl-, and N-propargyl compounds 2a-d were reacted with the corresponding Grignard reagent, and treatment of the products with cyanogen bromide gave the cyanamides 8a-d. These latter compounds were transformed into 10a,b,d, whose alkylation led to the target derivatives 6d-f, j-l, p-r, and w-y. The biochemical investigation of these substances showed that the affinities to the δ-opioid receptors were high, but the selectivity was low. Tn two cases (6c and 11d) a μ-opioid receptor specificity was observed.

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