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1228804-18-9

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1228804-18-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1228804-18-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,8,0 and 4 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1228804-18:
(9*1)+(8*2)+(7*2)+(6*8)+(5*8)+(4*0)+(3*4)+(2*1)+(1*8)=149
149 % 10 = 9
So 1228804-18-9 is a valid CAS Registry Number.

1228804-18-9Relevant articles and documents

Analogues of both Leu- and Met-enkephalin containing a constrained dipeptide isostere prepared from a Baylis-Hillman adduct

Galeazzi, Roberta,Martelli, Gianluca,Marcucci, Eleonora,Orena, Mario,Rinaldi, Samuele,Lattanzi, Roberta,Negri, Lucia

experimental part, p. 1057 - 1065 (2010/07/16)

An efficient route was developed for the synthesis of the Fmoc-protected dipeptide 4, isostere of Gly-Gly containing an α-methylene β-amino acid; the conformationally restricted analogues of Leu-enkephalin, 3a, and Met-enkephalin, 3b, respectively, were prepared by changing 4 for Gly 2-Gly3 in the native compounds 3a and 3b whose biological activities were significantly lower than the parent compounds.

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