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128228-55-7

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128228-55-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128228-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,2 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 128228-55:
(8*1)+(7*2)+(6*8)+(5*2)+(4*2)+(3*8)+(2*5)+(1*5)=127
127 % 10 = 7
So 128228-55-7 is a valid CAS Registry Number.

128228-55-7Downstream Products

128228-55-7Relevant articles and documents

Site-directed asymmetric quaternization of a peptide backbone at a C-terminal azlactone

Uraguchi, Daisuke,Asai, Yoshihiro,Ooi, Takashi

supporting information; experimental part, p. 733 - 737 (2009/05/06)

(Chemical Equation Presented) Dual-purpose activation: Peptide C-terminal azlactones I undergo stereoselective alkylation with high efficiency by the use of a newly devised chiral tetraaminophosphonium salt as a phase-transfer catalyst, and the alkylated

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