Cytosin
CAS 71-30-7
EC 200-749-5
Formula C4H5N3O
MW 111.1 g/mol
Heterocyclic Compounds Personal Care & CosmeticsBiotechnology & Life Sciences Humectant & Moisturizing
Description
Cytosine (CAS 71-30-7, EC 200-749-5) is a naturally occurring nucleobase and heterocyclic compound with the molecular formula C4H5N3O. It is also referenced under the names Zytosin, Cytosinimine, and NSC 27787. No E-code designation applies to this substance.
In personal care formulations, cytosine functions as a humectant by attracting and retaining moisture within the skin matrix, contributing to conditioning performance. It is also evaluated as a colorant component in cosmetic applications. In biotechnology and life sciences, it serves as a biochemical reference standard and building block in nucleic acid research.
Cytosine is supplied as a crystalline powder suitable for cosmetic and research-grade applications, classified under HS code 29335900. Procurement should confirm compliance with REACH registration requirements applicable within the EU. Packaging formats vary by supplier; buyers should specify quantity and purity grade requirements at the point of enquiry.
In personal care formulations, cytosine functions as a humectant by attracting and retaining moisture within the skin matrix, contributing to conditioning performance. It is also evaluated as a colorant component in cosmetic applications. In biotechnology and life sciences, it serves as a biochemical reference standard and building block in nucleic acid research.
Cytosine is supplied as a crystalline powder suitable for cosmetic and research-grade applications, classified under HS code 29335900. Procurement should confirm compliance with REACH registration requirements applicable within the EU. Packaging formats vary by supplier; buyers should specify quantity and purity grade requirements at the point of enquiry.
Physical Properties
| Melting Point | 322.5 °C (decomp) |
| Boiling Point | 208.2°C (rough estimate) |
| Density | 1.562 g/cm³ @ Temp: Room temp |
| Appearance | White Solid |
| Color | White to slightly yellow |
| Form | Crystalline Powder |
| Water Solubility | soluble |
| Refractive Index | 1.5000 (estimate) |
| Log P | -1.962 (est) |
Safety & Handling (Learn More)
Warning GHS07
H
H315H319H335
P
P261P264P271P280P319P321P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P305+P351+P338
Trade & Regulatory
| HS Code | 29335900 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 1 |
Other Names
6-amino-1H-pyrimidin-2-oneCytZytosinCytosineCytosinimine4-Aminouracil4-AMINO-2-PYRIMIDINOL4-AMINO-2(1)-PYRIMIDONE
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