Vitamin B3 Inositol Hexanicotinate

CAS Number
6556-11-2
EC Number
229-485-9

What is Vitamin B3 Inositol Hexanicotinate?

Vitamin B3 Inositol Hexanicotinate (CAS 6556-11-2) is the esterified form of niacin in which one molecule of inositol is bound to six nicotinic acid moieties.

Where is Vitamin B3 Inositol Hexanicotinate used?

  • Nutraceutical and dietary supplement: non-flushing niacin source listed in Annex II of Directive 2002/46/EC as an authorised vitamin B3 source for food supplements in the EU
  • Cardiovascular and metabolic health formulations
  • Softgels, tablets and hard capsules for circulatory support and cholesterol management
  • Pharmaceutical: active ingredient in regulated drug products and combination formulations
  • Personal care and cosmetics: skin-conditioning agent and niacin precursor in serums, creams and scalp treatments
  • It provides a milder niacin delivery vehicle suited to leave-on products where skin tolerability is a formulation priority.

Good to know: Non-flushing alternative to free nicotinic acid: delivers equivalent vitamin B3 activity without the cutaneous vasodilation response associated with standard niacin supplementation. Niacin contributes to normal energy-yielding metabolism, normal functioning of the nervous system, normal psychological function, normal skin and mucous membranes, and the reduction of tiredness and fatigue under Regulation (EC) No 432/2012.

Commercial specifications

  • White to off-white crystalline powder
  • Food-grade and pharma-grade options
  • USP and Ph. Eur.-aligned specifications where applicable
  • 25 kg fibre drums or cartons; 1–5 kg lots for pilot-scale and clinical batch manufacturing

Other Names (Synonyms)

Inositol Hexanicotinate|inositol niacinate|dilcit|dilexpal|esantene|hexanicit|MYO-INOSITOL HEXANICOTINATE

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What are the physical properties of Vitamin B3 Inositol Hexanicotinate?

Melting Point 254.6 °C
Boiling Point 755.54°C (rough estimate)
Density 1.3348 (rough estimate)
Refractive Index 1.6400 (estimate)
pka 3.92±0.10(Predicted)
Log P 3.945 (est)
Color White to Off-White
Form Solid
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