Identity
Chemical name, CAS number when known, grade, and whether the offer is the requested configuration or an alternative route.
01 Identity
02 Assay window
03 Package
04 Evidence list
Manufacturer field lock
Fine chemicals manufacturers compared on shared quotation fields
The matching desk writes one request so factories answer the same CAS number, assay, impurity profile, package net content and document list. Fine Chemicals Sourcing does not claim authorized distributor status and does not present a plant audit or finished GMP file as its own credential.
Request Factory QuotesFields every manufacturer response should return
Buyers often ask for a factory name first. A usable comparison starts with measurable answers. If a field stays blank, keep it visible instead of inferring a value from a catalog family page or a related grade.
Assay window
Requested assay, purity or concentration, plus moisture, residual solvent or trace metals questions that the process owner still needs answered.
Package and quantity
Kilograms, drums or another unambiguous unit; inner pack; palletization; and whether the quantity is sample, trial or firm.
Evidence list
Current SDS, TDS, CoA format, TSCA statement for US supply, and any REACH, ISO or GMP file the buyer asked to see for the quoted product only.
Trade-off: a high assay number without an impurity profile can still fail a later synthesis step. Conversely, a complete impurity table on a different CAS is not evidence for the requested molecule. The desk keeps those two answers on separate lines.
Quantity should use one unit across all manufacturer replies: kilograms, metric tons, liters, drums, bags or IBCs. If one factory quotes drums and another quotes kilograms, the desk asks both to restate net content before any commercial comparison. Requested timing is recorded as a buyer target, not a promised factory lead time.
Document questions factories should not inherit from this site
No. Those phrases are request labels. A named supplier must bind the file to the quoted product, issue date and site. A family brochure is not accepted as a substitute.
Define what the sample should confirm: identity, appearance, assay, particle size, viscosity or processing behavior. The buyer laboratory remains responsible for the pass or fail decision.
A different grade, solvent system or pack size is recorded as a new line. Unit price is not compared until product basis, currency, Incoterm and exclusions match.