109057-28-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 109057-28-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,9,0,5 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 109057-28:
(8*1)+(7*0)+(6*9)+(5*0)+(4*5)+(3*7)+(2*2)+(1*8)=115
115 % 10 = 5
So 109057-28-5 is a valid CAS Registry Number.
109057-28-5Relevant articles and documents
PAPAIN-CATALYZED SYNTHESIS OF 2-NAPHTHYLAMIDES OF N-ACYLAMINO ACIDS AND DIPEPTIDES
Cerovsky, Vaclav,Saks, Tatana,Jost, Karel
, p. 2309 - 2316 (2007/10/02)
2-Naphthylamides of several N-acylamino acids were prepared by papain-catalyzed condensation reaction in acidic medium.Under the same conditions, papain catalyzed the synthesis of peptide bond between benzyloxycarbonylglycine and phenylalanine 2-naphthyla