Quarterly report pursuant to Section 13 or 15(d)

DOCUMENT AND ENTITY INFORMATION

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DOCUMENT AND ENTITY INFORMATION
3 Months Ended
Mar. 31, 2013
May 14, 2013
Entity Registrant Name NOVELOS THERAPEUTICS, INC.  
Entity Central Index Key 0001279704  
Current Fiscal Year End Date --12-31  
Entity Filer Category Smaller Reporting Company  
Trading Symbol nvlt  
Entity Common Stock, Shares Outstanding   57,397,997
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2013  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2013