B1B2 Vitamins · Commercial Raw Materials
Bulk Vitamin B1 & Vitamin B2
Documented Quality. Independent QC. Traceable Lots. Immediate U.S. Availability.
Manufacturer COAs and independent Sigma testing. 3,000 kg of bulk B-vitamin raw material warehoused in South Carolina, subject to prior sale.
1,500 kg
Vitamin B1 — Thiamine Mononitrate
1,500 kg
Vitamin B2 — Riboflavin
South Carolina
U.S. Warehouse
Available Now
Immediate Domestic Delivery
Why Buy This Inventory
Quality evidence before commercial commitment
Documented Quality
Manufacturer certificates and source quality records support batch-specific buyer QA review.
Independent QC
Independent Sigma assays are reported separately from manufacturer results for all three lots.
Traceable Lots
Full lot traceability with manufacture and expiry dates documented to 2028.
Immediate U.S. Availability
Warehoused in South Carolina for domestic supply, subject to prior sale and agreed shipment terms.
Current Inventory
Two products. Full documentation.
Vitamin B1
Thiamine Mononitrate
- Available
- 1,500 kg — South Carolina
- Sigma Assay
- 99.3%
- Batch
- Y02202501042
- Manufactured
- January 26, 2025
- Expiry
- January 25, 2028
- Compliance
- BP2022 / USP43 / EP10.0 / FCC12
Vitamin B2
Riboflavin
- Available
- 1,500 kg in two documented lots
- Lot 2025052801
- 1,000 kg — 98.88% Sigma assay
- Lot 2025052901
- 500 kg — 99.65% Sigma assay
- Manufactured
- May 30–31, 2025
- Expiry
- May 2028
- Warehouse
- South Carolina
Documentation Proof
Every lot backed by a controlled technical package
Manufacturer certificates of analysis, independent Sigma QC results, lot sheets, and shelf-life documentation are maintained for every kilogram. Summary data is published on this site; full-resolution COAs are released to qualified buyers under the standard diligence process.
- Manufacturer COA — Huazhong Pharmaceutical (B1)
- Manufacturer COAs — Ruzhou Kunhe Biotechnology (B2, two lots)
- Independent Sigma analytical results on all lots
- Lot traceability, manufacture and expiry documentation
Start Diligence
Request the COA package
Tell us your company, product, quantity and required-by date. Qualified inquiries receive a response within one business hour during normal U.S. business hours.
Prefer to talk? Call Duke directly: 303-941-4377