83999-52-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83999-52-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,9 and 9 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 83999-52:
(7*8)+(6*3)+(5*9)+(4*9)+(3*9)+(2*5)+(1*2)=194
194 % 10 = 4
So 83999-52-4 is a valid CAS Registry Number.
83999-52-4Relevant articles and documents
STUDIES DIRECTED TOWARDS THE TOTAL SYNTHESIS OF MORPHINE ALKALOIDS
Evans, D. A.,Mitch, C. H.
, p. 285 - 288 (2007/10/02)
Application of metallated enamines to the synthesis of morphine related congeners is reported.A formal total synthesis of (+/-)-morphine has been completed.