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:


pharmaceutical primary standard





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Pharmaceutical (small molecule)



storage temp.




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
Daniel W Coyne et al.
Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association, 28(9), 2260-2268 (2013-06-22)
Chronic kidney disease (CKD) is associated with elevations in serum phosphate, calcium-phosphorus product and bone-specific alkaline phosphatase (BAP), with attendant risks of cardiovascular and bone disorders. Active vitamin D can suppress parathyroid hormone (PTH), but may raise serum calcium and...
M Cozzolino et al.
Clinical nephrology, 71(6), 593-601 (2009-05-29)
Modern strategies to prevent secondary hyperparathyroidism (SHPT) in chronic kidney disease (CKD) patients give great relevance to vitamin D replacement therapy. However, a sound approach to treatment requires taking into account many factors, including stage of CKD, underlying renal disorder...
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...
Jun Cheng et al.
Clinical journal of the American Society of Nephrology : CJASN, 7(3), 391-400 (2012-01-10)
Observational data indicate that newer vitamin D compounds such as paricalcitol can suppress serum intact parathyroid hormone (iPTH) and reduce proteinuria in patients with CKD. To systematically evaluate the efficacy and safety of paricalcitol for CKD, we conducted a meta-analysis...
Stefania Pacini et al.
Nutrients, 5(6), 2076-2092 (2013-06-12)
Cardiovascular diseases are more prevalent in patients with chronic kidney disease than in the general population and they are considered the leading cause of death in patients with end-stage renal disease. The discovery that vitamin D3 plays a considerable role...

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