what is wrong with Sudershan chemicals,it's loosing it's charm

I am not sure what you mean by losing charm. I think you are talking about the stock underperforming Sensex in last 1 year. The stock is up 45% against 50% for Sensex. The concern is that its P/E ratio at 34X is higher than the industry average of around 21-22 times for small sized specialty chemicals. However, ICICI has a buy target on the stock with target of Rs.825 on the stock. I don’t think you should worry too much about recent price fall.