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https://ntp.niehs.nih.gov/go/13355

Heptachlor: Target Organs and Levels of Evidence for TR-009

Bioassay of Heptachlor for Possible Carcinogenicity (CASRN 76-44-8)

Chemical (Study Title)
CASRN		Peer Review DateRoute/Exposure LevelsStudy Laboratory
Heptachlor
76-44-8		NADosed-Feed
MR: 0,38.9,77.9 (AVG), FR: 0,25.7,51.3 (AVG), MM: 0,6.1,13.8 (AVG), FM: 0,9,18 (AVG) PPM/50 PER GROUP		Gulf South Research Institute

Levels of Evidence

Male Rats: Negative
Female Rats: Equivocal
TypeOrgan/Tissue (Lesion)
Neoplastic Lesions
  • Thyroid Gland Follicular Cell: ADENOMA OR CARCINOMA
Male Mice: Positive
TypeOrgan/Tissue (Lesion)
Neoplastic Lesions
  • Liver: (CARCINOMA)
Female Mice: Positive
TypeOrgan/Tissue (Lesion)
Neoplastic Lesions
  • Liver: (CARCINOMA)