172988-55-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 172988-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,2,9,8 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 172988-55:
(8*1)+(7*7)+(6*2)+(5*9)+(4*8)+(3*8)+(2*5)+(1*5)=185
185 % 10 = 5
So 172988-55-5 is a valid CAS Registry Number.
172988-55-5Relevant articles and documents
Studies on pyrrolidinones. Synthesis and reactivity of some N-protected pyroglutamic derivatives
Rigo,Erb,El Ghammarti,Gautret,Couturier
, p. 1599 - 1604 (2007/10/03)
The synthesis of pyroglutamoyl chloride N-protected by a methoxycarbonyl or a trifluoroacetyl group is described. Some aspects of the reactivity of these compounds and intermediates have been studied.
