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213692-58-1

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213692-58-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 213692-58-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,3,6,9 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 213692-58:
(8*2)+(7*1)+(6*3)+(5*6)+(4*9)+(3*2)+(2*5)+(1*8)=131
131 % 10 = 1
So 213692-58-1 is a valid CAS Registry Number.

213692-58-1Downstream Products

213692-58-1Relevant articles and documents

Synthetic studies on the starfish alkaloid imbricatine. A chiral synthesis of tri-O-methylimbricatine

Ohba, Masashi,Nishimura, Yoshikazu,Kato, Miyako,Fujii, Tozo

, p. 4999 - 5016 (2007/10/03)

A detailed account is given of the chiral synthesis of tri-O- methylimbricatine (3), the triO-methyl derivative of the structurally unique benzyltetrahydroisoquinoline alkaloid imbricatine (2) isolated from the starfish Dermasterias imbricata. The route begins with the asymmetric synthesis of the sulfur-containing D-phenylalanine derivative (R)-11a and includes its conversion into the cis-benzyltetrahydroisoquinoline moiety 26a possessing the thiol group and construction of the 5-arylthio-3-methyl-L- histidine portion. The correctness of the structure and absolute configuration proposed for imbricatine has been unequivocally confirmed as a result of the present synthesis.

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