51977-16-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 51977-16-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,1,9,7 and 7 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 51977-16:
(7*5)+(6*1)+(5*9)+(4*7)+(3*7)+(2*1)+(1*6)=143
143 % 10 = 3
So 51977-16-3 is a valid CAS Registry Number.
51977-16-3Relevant articles and documents
Isocyanates - Part 3. Synthesis of carbamates by DMAP-catalyzed reaction of amines with di-tert-butyldicarbonate and alcohols
Knoelker, Hans-Joachim,Braxmeier, Tobias
, p. 5861 - 5864 (2007/10/03)
Carbamates are prepared by DMAP-catalyzed reaction of amines with di-tert-butyldicarbonate and subsequent trapping of the intermediate isocyanates with alcohols.