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81806-30-6

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81806-30-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81806-30-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,8,0 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 81806-30:
(7*8)+(6*1)+(5*8)+(4*0)+(3*6)+(2*3)+(1*0)=126
126 % 10 = 6
So 81806-30-6 is a valid CAS Registry Number.

81806-30-6Relevant articles and documents

Direct Catalytic Alcoholysis of Unactivated 8-Aminoquinoline Amides

Deguchi, Toru,Xin, Hai-Long,Morimoto, Hiroyuki,Ohshima, Takashi

, p. 3157 - 3161 (2017)

Direct catalytic alcoholysis of unactivated amides is one of the most difficult challenges in organic chemistry, and an applicable method for cleaving amides used as directing groups in regioselective functionalization reactions has not been reported. Herein, we report direct catalytic alcoholysis of 8-aminoquinoline amides, which are highly effective directing groups in regioselective functionalization reactions. The reactions proceeded with a simple combination of substrates, air-stable catalysts, and alcohols, affording the corresponding esters in good yields with broad functional group tolerance. Highly chemoselective cleavage of the 8-aminoquinoline amides in the presence of related carbonyl functionalities and preliminary mechanistic studies are also described.

SYNTHESIS OF ENKEPHALIN ANALOGS. PART IV. N-ALKYLATED DERIVATIVES

Paruszewski, Ryszard,Matusiak, Roza,Rostafinska-Suchar, Grazyna,Gumulka, Stanislaw,Misterek, Krystyna,Dorociak, Anna

, p. 361 - 368 (2007/10/02)

Four new derivatives of enkephalin analogs: H-PrTyr-D-Met-Gly-Phe-εAhx-εAhx-OH (24).H-iPrTyr-D-Met-Gly-Phe-εAhx-εAhx-Oh (25).H-Pr-Tyr-D-Met-Gly-Phe-εAhx-OH (30) and H-iPrTyr-D-Met-Gly-Phe-εAhx-OH (31) have been synthesized and tested for agonistic, antagonistic and analgesic activity.Compound 24 showed a moderate μ agonistic potency and high selectivity.

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