Agent Name

Vitamin D2

Alternative Name


CAS Number




Major Category

Biological Agents


(+)-Vitamin D2; (3-beta,5Z,7E,22E)-9,10-Secoergosta-5,7,10,(19),22-tetraen-3-ol; 9,10-Seco(5Z,7E,22E)-5,7,10(19),22-ergostatetraen-3-ol; 9,10-Secoergosta-5,7,10(19),22-tetraen-3-beta-ol; Activated ergosterol; Buco-D; Calciferol; Calciferolum; Calciferon 2; Condocaps; Condol; Crystallina; D-Arthin; D-Tracetten; Daral; Davitamon D; Davitin; De-rat concentrate; Decaps; Dee-Osterol; Dee-Ron; Dee-Ronal; Dee-Roual; Deltalin; Deratol; Detalup; Diactol; Disdrol; Divit urto; Doral; Drisdol; Ergocalciferol; Ergocalciferolo [DCIT]; Ergocalciferolum [INN-Latin]; Ergorone; Ertron; Fortodyl; Geltabs; Hi-Deratol; Hyperkil; Infron; Irradiated ergosta-5,7,22-trien-3-beta-ol; Metadee; Mina D2; Mulsiferol; Mykostin; Novovitamin-D; Oleovitamin D2; Ostelin; Radiostol; Radsterin; Rodine C; Rodinec; Shock-ferol; Sorex C.R.; Sterogyl; Vigantol; Vio-D; Viosterol; Vitavel-D; 9,10-Secoergosta-5,7,10(19),22-tetraen-3-ol, (3beta,5Z,7E,22E)-; Cyclohexanol, 4-methylene-3-((2E)-2-((1R,3aS,7aR)-octahydro-7a-methyl-1-((1R,2E,4R)-1,4,5-trimethyl-2-hexen-1-yl)-4H-inden-4-ylidene)ethylidene)-, (1S,3Z)-; [ChemIDplus] UN2811


Vitamins and Derivatives


White odorless solid; [CAMEO] White powder; [Sigma-Aldrich MSDS]


Synthetic form of vitamin D used as a rodenticide and therapeutic vitamin; [Merck Index] Used as a nutritional supplement; [FDA] "Ergocalciferol may be used as a vitamin D supplement, and a 2011 clinical guideline considered it to be as effective as cholecalciferol (vitamin D3), which is produced naturally by the skin when exposed to ultraviolet light. Conflicting evidence exists for how similarly D2 and D3 behave in the body and whether they are equally active, with preliminary studies suggesting D3 is more potent, while others report equal efficacy." [Wikipedia]


Chronic poisoning can cause calcium metabolism disturbances and kidney injury; [CAMEO] May cause irritation; Highly toxic by ingestion and inhalation; Toxic by skin absorption; Prolonged or repeated ingestion exposure may cause organ injury; [Sigma-Aldrich MSDS] See "Vitamin D."


No active pesticide product registrations in the US; [NPIRS]

Exposure Assessment
Explanatory Notes

The Guide in the Emergency Response Guidebook is for "Toxic solid, organic, n.o.s."

Links to Other NLM Databases
Health Studies

Human Health Effects from Hazardous Substances Data Bank:

Toxicity Information


Chemical Information

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Other Information

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