74639-51-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74639-51-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,6,3 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74639-51:
(7*7)+(6*4)+(5*6)+(4*3)+(3*9)+(2*5)+(1*1)=153
153 % 10 = 3
So 74639-51-3 is a valid CAS Registry Number.
74639-51-3Relevant articles and documents
ASYMMETRIC TOTAL SYNTHESIS OF INDOLMYCIN
Takeda, Takeshi,Mukaiyama, Teruaki
, p. 163 - 166 (1980)
An asymmetric total synthesis of indolmycin was achieved via a key intermediate, α-indolmycenic acid ester.The ester was obtained by oxygenation of methyl (S)-3-(3-indolyl)butanoate which was prepared by asymmetric synthesis utilizing (2R,3S)-3,4-dimethyl
