The CAS Registry Mumber 28398-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,3,9 and 8 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 28398-81: (7*2)+(6*8)+(5*3)+(4*9)+(3*8)+(2*8)+(1*1)=154 154 % 10 = 4 So 28398-81-4 is a valid CAS Registry Number.
Synthesis of analogs of alpha-ecdysone. A simplified synthesis of 2-beta, 3-beta, 14-alpha-trihydroxy-7-en-6-one-5-beta-steroids.
Thompson,Robbins,Kaplanis,Cohen,Lancaster
, p. 85 - 104 (2007/10/06)
-
Post a RFQ
1
What can I do for you? Get Best Price
Get Best Price for28398-81-4Toluene-4-sulfonic acid (3S,5S,6S,8S,9S,10R,13R,14S,17R)-17-((1R,4R)-4-ethyl-1,5-dimethyl-hexyl)-6-hydroxy-10,13-dimethyl-hexadecahydro-cyclopenta[a]phenanthren-3-yl ester