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128677-85-0

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128677-85-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128677-85-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,7 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 128677-85:
(8*1)+(7*2)+(6*8)+(5*6)+(4*7)+(3*7)+(2*8)+(1*5)=170
170 % 10 = 0
So 128677-85-0 is a valid CAS Registry Number.

128677-85-0Relevant articles and documents

Asymmetric synthesis of unusual amino acids: An efficient synthesis of optically pure isomers of β-methylphenylalanine

Dharanipragada,VanHulle,Bannister,Bear,Kennedy,Hruby

, p. 4733 - 4748 (1992)

Substitution of the diastereotopic β-hydrogens of many α-amino acids provides an approach to the three dimensional topographic control of peptide structure. Asymmetric synthesis of the desired amino acids is needed to facilitate these studies. All four in

ASYMMETRIC SYNTHESIS OF UNUSUAL AMINO ACIDS: SYNTHESIS OF OPTICALLY PURE ISOMERS OF β-METHYLPHENYLALANINE

Dharanipragada, Ramalinga,Nicolas, Ernesto,Toth, Geza,Hruby, Victor J.

, p. 6841 - 6844 (2007/10/02)

All the four individual isomers of β-methylphenylalanine have been synthesized in very high optical purities by utilizing in part the chiral imide enolate bromination methodology of Evans and co-workers.

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