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In order to aid inhibitor design and rationalize the basis for CDK9 selectivity , we have studied the CDK - binding properties of six different members of a 4 - ( thiazol - 5 - yl ) - 2 - ( phenylamino ) pyrimidine - 5 - carbonitrile series that bind to both CDK9 / cyclin T and CDK2 / cyclin A .
 Chemical: 4 - ( thiazol - 5 - yl ) - 2 - ( phenylamino ) pyrimidine - 5 - carbonitrile
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 4 - ( thiazol - 5 - yl ) - 2 - ( phenylamino ) pyrimidine - 5 - carbonitrile