98237-57-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 98237-57-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,8,2,3 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 98237-57:
(7*9)+(6*8)+(5*2)+(4*3)+(3*7)+(2*5)+(1*7)=171
171 % 10 = 1
So 98237-57-1 is a valid CAS Registry Number.
98237-57-1Relevant articles and documents
Thiamorphinans II
Sauter, Fritz,Stanetty, Peter,Fuhrmann, Ferdinand
, p. 263 - 272 (1985)
The present paper is dealing with two isomeric series of 5,5a,6,7,8,9-hexahydro-5,9a-iminoethano-4H-haphthothiophenes ("thiamorphinans") which were synthesized as a new type of potential narcotic analgesics.Keywords: Heterocyclic synthesis; Condensed thiophenes; Morphinan; Narcotic analgesics
