142056-17-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142056-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,0,5 and 6 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 142056-17:
(8*1)+(7*4)+(6*2)+(5*0)+(4*5)+(3*6)+(2*1)+(1*7)=95
95 % 10 = 5
So 142056-17-5 is a valid CAS Registry Number.
142056-17-5Relevant articles and documents
AN ALTERNATIVE SYNTHESIS OF Ψ (CH2O) PSEUDOPEPTIDES
Hlavacek, Jan,Kral, Vladimir
, p. 525 - 530 (2007/10/02)
An alternative route to obtain Ψ(CH2O) pseudodipeptide unit based on insertion of carbens in hydroxylic bond of alcohols mediated by catalyst rhodium(II) acetate is described.In that way, N-protected derivatives of alaninol, valinol, isoleucinol, leucinol