199850-99-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 199850-99-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,9,8,5 and 0 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 199850-99:
(8*1)+(7*9)+(6*9)+(5*8)+(4*5)+(3*0)+(2*9)+(1*9)=212
212 % 10 = 2
So 199850-99-2 is a valid CAS Registry Number.
199850-99-2Relevant articles and documents
An approach to the narciclasine alkaloids via a quinone methide initiated cyclization reaction
Angle, Steven R.,Wada, Tetsuo
, p. 7955 - 7958 (1997)
The stereoselective synthesis of a possible intermediate for the synthesis of the narciclasine alkaloids from D-glucose is described. The key step of the sequence is a quinone methide initiated cyclization reaction.