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221332-83-8

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221332-83-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221332-83-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,3,3 and 2 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 221332-83:
(8*2)+(7*2)+(6*1)+(5*3)+(4*3)+(3*2)+(2*8)+(1*3)=88
88 % 10 = 8
So 221332-83-8 is a valid CAS Registry Number.

221332-83-8Upstream product

221332-83-8Relevant articles and documents

Synthetic studies on the starfish alkaloid imbricatine. Construction of an ent-imbricatine framework

Ohba, Masashi,Imasho, Masaaki,Fujii, Tozo

, p. 83 - 89 (2007/10/03)

A chiral synthetic route to the amino esters 5 and 6, which contain the fundamental framework of ent-imbricatine (ent-3), has been developed as a prelude to the total synthesis of the starfish alkaloid imbricatine (3). The route started from the sulfur-co

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