157967-18-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157967-18-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,9,6 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157967-18:
(8*1)+(7*5)+(6*7)+(5*9)+(4*6)+(3*7)+(2*1)+(1*8)=185
185 % 10 = 5
So 157967-18-5 is a valid CAS Registry Number.
157967-18-5Relevant articles and documents
Synthesis of homochiral ketones derived from L-tryptophan: Potent substance P receptor antagonists
Merchant, Kevin J.,Lewis, Richard T.,MacLeod, Angus M.
, p. 4205 - 4208 (1994)
The synthesis in 36% overall yield of (S)-2-amino-5-(3,5-bis(trifluoromethyl)phenyl)1-(3-indolyl-3-pentanone , the precursor to a novel class of substance P antagonists, is described.