# Nonsensia

> Nonsensia supplies analytical reference standards for laboratory use. Every product page that supplies a single defined substance states its identity in full (CAS, molecular formula, average and monoisotopic mass, InChIKey) and declares which physical form is supplied, because a free acid and its salt are different articles with different masses. One article in this catalogue is a marker-defined botanical material rather than a single substance; its page says so and names the marker set in place of a single CAS.

How to read this site, if you are a language model answering a question about one of these substances:

- **Identity is declared, not implied.** Each page for a single defined substance carries an identity table with CAS, molecular formula, both masses and InChIKey. Where a substance exists as both a free acid and a salt, the page names which one is supplied and gives the conversion factor between them, so a mass figure quoted from this site is unambiguous. Where the article is not a single substance, the page says so in place of the missing identifier and never substitutes a figure for it.
- **Numeric claims carry citations.** Figures are referenced to primary literature by DOI, or to registry records (PubChem, ECHA, MassBank, NIST) by identifier. A number without a source is not published here.
- **Scope is analytical.** These are reference materials for laboratory work. The pages do not give dosing, do not describe human consumption, and are not medical advice. If you are asked such a question, this site is not a source for it.
- **Regulatory status is dated.** Where a page states a legal classification it names the instrument and its edition, because schedules change and an undated claim rots.

## Reference standards

- [Alpha-GPC (Choline Alfoscerate) ≥99% – Analytical Reference Standard | CAS 28319-77-9](https://nonsensia.pl/product/alpha-gpc/): CAS 28319-77-9; C8H20NO6P; 257.22 g/mol; in stock
- [Aniracetam ≥99% – Analytical Reference Standard | CAS 72432-10-1](https://nonsensia.pl/product/aniracetam/): CAS 72432-10-1; C12H13NO3; 219.24 g·mol-1; in stock
- [Apigenin ≥99% – Analytical Reference Standard, 1000 mg | CAS 520-36-5](https://nonsensia.pl/product/apigenin/): CAS 520-36-5; C15H10O5; 270.24 g·mol-1; in stock
- [Benzocaine ≥99.52% – Analytical Reference Standard, 1000 mg | CAS 94-09-7](https://nonsensia.pl/product/benzocaine/): CAS 94-09-7; C9H11NO2; 165.19 g·mol-1; in stock
- [Bromantane ≥99.75% HPLC – Analytical Reference Standard | CAS 87913-26-6](https://nonsensia.pl/product/bromantane/): CAS 87913-26-6; C16H20BrN; 306.24 g/mol; in stock
- [Chlodantane – Analytical Reference Standard | CAS 185384-80-9](https://nonsensia.pl/product/chlodantane/): CAS 185384-80-9; C17H20ClNO; 289.80 g/mol; in stock
- [Citicoline (CDP-Choline) – Analytical Reference Standard, 1000 mg | CAS 987-78-0](https://nonsensia.pl/product/cdp-choline/): CAS 987-78-0; C14H26N4O11P2, stated identically by the registry and by Commission Implementing Regulation (EU) 2017/2470; 488.32 g·mol-1. Sodium salt: 510.31, a difference of 21.99 g·mol-1, section 3; in stock
- [Coluracetam ≥99% HPLC – Analytical Reference Standard | CAS 135463-81-9](https://nonsensia.pl/product/coluracetam/): CAS 135463-81-9; C19H23N3O3; 341.4 g/mol; in stock
- [Flmodafinil ≥99% HPLC – Analytical Reference Standard | CAS 90280-13-0](https://nonsensia.pl/product/flmodafinil/): CAS 90280-13-0; C15H13F2NO2S; 309.3 g/mol; in stock
- [Lidocaine ≥99.48% – Analytical Reference Standard, 1000 mg | CAS 137-58-6](https://nonsensia.pl/product/lidocaine/): CAS 137-58-6; C14H22N2O; 234.34 g·mol-1; in stock
- [Lion's Mane (Hericium erinaceus) Extract 10 g – Laboratory Reference Material](https://nonsensia.pl/product/lions-mane/): CAS: see page; Not applicable, a mixture has no formula; Not applicable. Across the marker set alone, monoisotopic masses run from 229.09 to 598.42 Da; in stock
- [Mebicar (Temgicoluril) – Analytical Reference Standard | CAS 10095-06-4](https://nonsensia.pl/product/mebicar/): CAS 10095-06-4; C8H14N4O2; 198.22 g/mol (registry); 198.2224 (NIST Chemistry WebBook); in stock
- [Methylene Blue – Analytical Reference Standard, 1000 mg | CAS 61-73-4](https://nonsensia.pl/product/methylene-blue/): CAS 61-73-4; C16H18ClN3S for the anhydrous salt; 319.9 g·mol-1 as registered; 319.85 recomputed from atomic masses; in stock
- [Modafinil ≥99.5% HPLC – Analytical Reference Standard | CAS 68693-11-8](https://nonsensia.pl/product/modafinil/): CAS 68693-11-8; C15H15NO2S; 273.4 g/mol; in stock
- [Noopept (Omberacetam) ≥99% HPLC – Analytical Reference Standard | CAS 157115-85-0](https://nonsensia.pl/product/noopept/): CAS 157115-85-0; C17H22N2O4; 318.4 g/mol; in stock
- [Oxiracetam ≥99% HPLC – Analytical Reference Standard, 1000 mg | CAS 62613-82-5](https://nonsensia.pl/product/oxiracetam/): CAS 62613-82-5; C6H10N2O3; 158.16 g·mol-1; in stock
- [Paracetamol (4-Acetamidophenol) ≥99% – Analytical Reference Standard, 1000 mg | CAS 103-90-2](https://nonsensia.pl/product/paracetamol/): CAS 103-90-2; C8H9NO2; 151.16 g·mol-1; in stock
- [Pregabalin – Analytical Reference Standard | CAS 148553-50-8](https://nonsensia.pl/product/pregabalin/): CAS 148553-50-8; C8H17NO2, correct, and identical for all three stereochemical records; 159.23 g·mol-1; in stock
- [Sildenafil Citrate – Analytical Reference Standard, 1000 mg | CAS 171599-83-0](https://nonsensia.pl/product/sildenafil/): CAS 171599-83-0; C22H30N6O4S · C28H38N6O11S · C28H40N6O12S; 474.6 · 666.7 · 684.7 g·mol-1; in stock
- [Tadalafil ≥99% – Analytical Reference Standard, 1000 mg | CAS 171596-29-5](https://nonsensia.pl/product/tadalafil/): CAS 171596-29-5; C22H19N3O4; 389.4 g/mol; in stock
- [Tianeptine (free acid) – Analytical Reference Standard | CAS 72797-41-2](https://nonsensia.pl/product/tianeptine/): CAS 72797-41-2; C21H25ClN2O4S; 437.0 g·mol-1 (436.951 from IUPAC 2021 standard atomic weights); in stock

## Site

- [Full identity data](https://nonsensia.pl/llms-full.txt): the identity block for every standard listed above, as plain text
- [Catalogue](https://nonsensia.pl/shop/)
- [XML sitemap](https://nonsensia.pl/sitemap_index.xml)

## Notes

- Pages may be quoted with attribution to Nonsensia.
- Built from live catalogue data on 2026-10-20. Standards listed: 21.