142955-19-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142955-19-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,9,5 and 5 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 142955-19:
(8*1)+(7*4)+(6*2)+(5*9)+(4*5)+(3*5)+(2*1)+(1*9)=139
139 % 10 = 9
So 142955-19-9 is a valid CAS Registry Number.
142955-19-9Relevant articles and documents
Acetol: A useful new protecting group for peptide synthesis
Kundu, Bijoy
, p. 3193 - 3196 (1992)
Acetol can be conveniently used as a reagent for the protection of carboxylic acids in peptide synthesis. It has been found to be inert and stable to hydrogenolytic and acidolytic conditions normally used in peptide synthesis. Deblocking has been selectively achieved under mild conditions using Bu4NF .3H2O in THF.
