United States Pharmacopeia (USP) Reference Standard

(1α, 3β, 7E,22E)-19-Nor-9,10-secoergosta-5,7,22-triene-1,3,25-triol
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
Pricing and availability is not currently available.


pharmaceutical primary standard




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InChI key


General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Other Notes

USP issued SDS can be found here.
Sales restrictions may apply.


Skull and crossbonesHealth hazard

Signal Word


Hazard Statements


UN 2811 6.1 / PGI

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Mario Cozzolino et al.
Expert opinion on pharmacotherapy, 9(6), 947-954 (2008-04-02)
Secondary hyperparathyroidism (SHPT) is common in chronic kidney disease (CKD) patients. Classically, SHPT is induced by hypocalcemia, hyperphosphatemia, and calcitriol deficiency, that cause not only renal osteodystrophy but also systemic toxicity, particularly cardiovascular disease. Treatment with calcitriol, the active form...
Vanessa Pérez et al.
European journal of pharmacology, 709(1-3), 72-79 (2013-04-10)
Secondary hyperparathyroidism is a common complication in patients with chronic kidney disease and frequently persists after kidney transplantation. Paricalcitol, a selective vitamin D receptor activator, is indicated in the management of this disorder and recent evidences have suggested that this...
Jae-Won Lee et al.
Biochemical and biophysical research communications, 444(2), 121-127 (2014-01-18)
The pathophysiology of ischemic acute kidney injury (AKI) is thought to include a complex interplay between vascular endothelial cell dysfunction, inflammation, and tubular cell damage. Several lines of evidence suggest a potential anti-inflammatory effect of vitamin D in various kidney...
Ofer Havakuk et al.
The Israel Medical Association journal : IMAJ, 15(11), 693-697 (2014-02-12)
Vitamin D has been shown to induce beneficial effects on cardiovascular and renal morbidity by regulating inflammation and tissue fibrosis. To evaluate the effect of vitamin D analogues on cardiac function and fibrosis in an animal model of cardiorenal syndrome....
Angela Yee-Moon Wang et al.
Journal of the American Society of Nephrology : JASN, 25(1), 175-186 (2013-09-21)
Vitamin D seems to protect against cardiovascular disease, but the reported effects of vitamin D on patient outcomes in CKD are controversial. We conducted a prospective, double blind, randomized, placebo-controlled trial to determine whether oral activated vitamin D reduces left...

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