Tadalafil 1 g reagent: classification, storage and stock records

Description

Tadalafil supplied as a high-assay solid is bought as a comparison material for chromatographic methods, for detector calibration and for confirming the identity of unknown solids. These notes cover only what happens to the sealed container between the courier’s van and the balance room.

Zestawienie parametrów materiału

Parameter	Value	What follows in store practice
CAS registry number	171596-29-5	Copied onto the intake card, the internal label and the carrier’s paperwork; it separates the compound from trade names.
Empirical formula	C22H19N3O4	A purely organic skeleton, with no metal residue that would force segregated storage.
Molar mass	389.40 g/mol	Turns a weighed portion straight into a molar concentration, without an outside database mid-run.
Physical form	Crystalline powder	Transfer in a draught-free enclosure; one dedicated spatula, balance pan cleaned afterwards.
Declared assay	≥ 99%	A figure for one lot, not a permanent property; the certificate tied to the lot is binding.
Unit of sale	1000 mg net	One container, one inventory line; subdivision needs a new identifier linked to the parent lot.

Classification at goods-in

The container enters the store as a single-substance solid organic reagent, not a formulated preparation, and is booked in as such. The intake card carries the registry number, the manufacturer’s lot symbol, the net mass shown on the label and the date the seal was examined. Where the internal catalogue separates reference materials from working chemistry, this item belongs to the first group: what is bought is the documented purity of one lot rather than the mass alone.

Conditions in the store

The material stays in its original opaque container, tightly closed, in a dry cabinet away from sunlight and from ovens or drying chambers. Storage temperature is the figure printed on the supplier label; where the label is silent, ambient room conditions with controlled humidity become the working assumption, and that assumption is written into the record instead of being left in somebody’s memory. Repeated opening is the real enemy of a fine crystalline solid, since every cycle admits moist air.

Movement between sites

For transfer the primary container travels upright inside a rigid secondary box with inert cushioning, closure taped, the outer carton marked with the registry number that appears on the internal label. Consignment papers name the substance, the lot and the net mass, so a parcel opened at the far end matches the entry that left the sending store. A handover note signed at both ends closes the chain of custody, and transit delays are logged. See also our reagent-grade material: Palmitoylethanolamide (PEA) ≥ 99% 1000mg..

What the ledger has to carry

The stock record shows the quantity received, every withdrawal with its mass and signature, the running balance and the lot each withdrawal belongs to. The retest date taken from the certificate sits in the same row, together with the route planned for the residue once the container is retired. A ledger that records only arrivals is a catalogue, not an inventory. See also our catalogue listing: ALCAR / Acetylo-L-Karnityna – Czystość ≥ 99% masa .

Other catalogue items

• ALCAR / Acetylo-L-Karnityna – Czystość ≥ 99% masa netto 1000mg.
• Palmitoylethanolamide (PEA) ≥ 99% 1000mg.
• FL-MODAFINIL, 99% Czystości, 1000MG OR 1GRAM
• Modafinil (CAS 68693-11-8) — karta charakterystyki, klasyfikacja i war

References

Animal and in vitro studies indexed in PubMed; no human-use guidance is provided here.

• Sebastianelli A Tadalafil Alone or in Combination with Tamsulosin for the Management for LUTS/BPH and ED 2020, Current urology reports. PMID 33108544
• Greco EA Tadalafil and Steroid Hormones Interactions in Adipose, Bone and Prostate Tissues: Focus on Translational Perspectives 2022, International journal of molecular sciences. PMID 35457011
• Jehle DVK Benefits of Tadalafil and Sildenafil on Mortality, Cardiovascular Disease, and Dementia 2025, The American journal of medicine. PMID 39532245
• Gong B Direct comparison of tadalafil with sildenafil for the treatment of erectile dysfunction: a systematic review and meta-analysis 2017, International urology and nephrology. PMID 28741090

Product classification. It is not a substance for human use. The material is not a veterinary product. A high-purity laboratory product used in HPLC and GC-MS studies. Outside the category of medicinal and food products.