123171-52-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123171-52-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,1,7 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123171-52:
(8*1)+(7*2)+(6*3)+(5*1)+(4*7)+(3*1)+(2*5)+(1*2)=88
88 % 10 = 8
So 123171-52-8 is a valid CAS Registry Number.
123171-52-8Relevant articles and documents
A facile route to 20-hydroxyecdysone and side chain homologues from poststeron
Hedtmann, Udo,Klintz, Ralf,Hobert, Kurt,Frelek, Jadwiga,Vlahov, Iontscho,Welzel, Peter
, p. 3753 - 3772 (2007/12/18)
A flexible approach to ecdysteroids, chain elongated at C-26 and C-27, is reported. Key features are the addition of 5-lithio 2,3-dihydrofurans (3) to poststeron (10) and a stereoselective reduction of the 22-∞ group.
