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128551-10-0

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128551-10-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128551-10-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,5,5 and 1 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 128551-10:
(8*1)+(7*2)+(6*8)+(5*5)+(4*5)+(3*1)+(2*1)+(1*0)=120
120 % 10 = 0
So 128551-10-0 is a valid CAS Registry Number.

128551-10-0Downstream Products

128551-10-0Relevant articles and documents

Stereospecific Conversions of (+)-2- and (+)-3-Carenes into Optically active Seven-Membered Ring Systems

Eilbracht, Peter,Winkels, Irmgard

, p. 191 - 198 (2007/10/02)

The reactions of (+)-2-carene (6b) and (+)-3-carene (15) with iron carbonyls are studied under various conditions.Besides double bond isomerization and interconversion of the two isomeric hydrocarbons, at least two different modes of ring opening leading to six- and seven-membered ring products are observed.Under mild conditions the primary ring opening complex 7b is isolated without loss of sterical information.Carbonylation of 7b under various conditions yields optically active cycloheptene systems 18, 19, and 20 or the bicyclic systems 9b and 10b.

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