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888494-16-4

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888494-16-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 888494-16-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,8,8,4,9 and 4 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 888494-16:
(8*8)+(7*8)+(6*8)+(5*4)+(4*9)+(3*4)+(2*1)+(1*6)=244
244 % 10 = 4
So 888494-16-4 is a valid CAS Registry Number.

888494-16-4Relevant articles and documents

Stereocontrolled synthesis of 3-substituted azetidinic amino acids

Sivaprakasam, Mangaleswaran,Couty, Fran?ois,Evano, Gwilherm,Srinivas,Sridhar,Rao, K. Rama

, p. 781 - 785 (2007/10/03)

A set of enantiomerically pure N-disubstituted β-amino alcohols was chlorinated by treatment with thionyl chloride. This reaction gave a mixture of regioisomeric chlorides that could be equilibrated to the more stable regioisomer by heating in DMF. The chlorides thus obtained were engaged in an intramolecular anionic ring-closure and gave access to fully protected enantio- and diastereomerically pure 2,3-cis-disubstituted azetidinic amino acids. One of the latter was deprotected and included in a short peptide sequence. Georg Thieme Verlag Stuttgart.

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