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Sodium Nitroprusside

Pharmaceutical Secondary Standard; Certified Reference Material

Nitroprusside sodium, Sodium nitroprusside, SNP, Sodium nitroferricyanide(III) dihydrate, Sodium pentacyanonitrosylferrate
Linear Formula:
Na2[Fe(CN)5NO] · 2H2O
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level


certified reference material
pharmaceutical secondary standard


current certificate can be downloaded


HPLC: suitable
gas chromatography (GC): suitable


pharmaceutical (small molecule)



pharmacopeia traceability

traceable to USP 1614501

storage temp.


SMILES string




InChI key


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General description

Certified pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to pharmacopeia primary standards. Sodium Nitroprusside is widely used as a drug to manage hypertension, via lowering elevated blood pressure by acting on the arteriolar smooth muscle.


These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.
Sodium Nitroprusside may be used as a spectrophotometric reagent for the analysis of meloxicam in pharmaceutical formulations using spectrophotometric technique.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.


To see an example of a Certificate of Analysis for this material enter LRAB7818 in the slot below. This is an example certificate only and may not be the lot that you receive.


Skull and crossbones

Signal Word


Hazard Statements

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

Oliver Baretella et al.
Life sciences, 118(2), 206-212 (2014-01-15)
Levels of the endothelium-derived peptide endothelin-1 (ET-1) are elevated in obese humans, and ET-1 mediated vascular tone is increased. Renal arterial smooth muscle is highly responsive to ET-1. Whether or not endothelium-derived ET-1 affects contractions of the renal artery under
Laura A E Cox et al.
Shock (Augusta, Ga.), 43(4), 322-326 (2015-01-08)
Although endothelial dysfunction is central to the pathogenesis of sepsis, no specific and clinically applicable marker for endothelial dysfunction is currently available. Endocan, a proteoglycan excreted by endothelial cells in response to inflammatory cytokines, may serve as such a marker.
Spectrophotometric determination of meloxicam by sodium nitroprusside and 1, 10-phenanthroline reagents in bulk and its pharmaceutical formulation
Gurupadayya MB, et al.
Indian Journal of Chemical Technology, 20, 111-115 (2013)
Rohit Ramchandra et al.
American journal of physiology. Regulatory, integrative and comparative physiology, 307(3), R271-R280 (2014-05-23)
Heart failure (HF) is associated with increased cardiac and renal sympathetic drive, which are both independent predictors of poor prognosis. A candidate mechanism for the centrally mediated sympathoexcitation in HF is reduced synthesis of the inhibitory neuromodulator nitric oxide (NO)
Gary J Hodges et al.
Experimental physiology, 99(2), 381-392 (2013-11-12)
What is the central question of this study? Previous work has produced the counterintuitive finding that the vasoconstrictor neurotransmitters noradrenaline and neuropeptide Y are involved in vasodilatation. We aimed to discover whether sympathetic neurotransmitters are required for the sustained vasodilatation

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