1837-62-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1837-62-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,3 and 7 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1837-62:
(6*1)+(5*8)+(4*3)+(3*7)+(2*6)+(1*2)=93
93 % 10 = 3
So 1837-62-3 is a valid CAS Registry Number.
1837-62-3Relevant 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 (1996)
Carbamates are prepared by DMAP-catalyzed reaction of amines with di-tert-butyldicarbonate and subsequent trapping of the intermediate isocyanates with alcohols.