Description
STANDARDISED BOTANICAL ACTIVE
Harringtonine — 70.0%
Harringtonine is listed at 70.0% by HPLC as a distinct Cephalotaxus alkaloid. Related alkaloids, including homoharringtonine and cephalotaxine, are reported per batch; review those results alongside the harringtonine assay.
COA-Backed Specification
| Identity | Harringtonine (Cephalotaxus alkaloid) |
|---|---|
| Plant part | Aerial parts (leaf, twig and bark) |
| Form and colour | Off-white to pale cream crystalline powder |
| Assay | 70.0% |
| Method | HPLC |
| Related alkaloids | Homoharringtonine and cephalotaxine reported per batch |
| Particle size | 98% through 80 mesh |
| Loss on drying | Within the limits of the approved specification |
| Ash | Within the limits of the approved specification |
| Heavy metals | Within the limits of the approved specification |
| Microbiological limits | Within the limits of the approved specification |
| Shelf life | Two years when stored properly |
Limits shown are the agreed specification. Result values are issued on the batch-specific certificate of analysis.
Buyer Decision Guide
A 70% alkaloid grade raises two questions a 98% grade does not: what the balance consists of, and whether the buyer’s method resolves the related alkaloids. Settle both in writing before the first order.
- Assay: 70.0% by HPLC, with the balance characterised as related Cephalotaxus alkaloids.
- Individual limits for homoharringtonine and cephalotaxine agreed in the specification.
- Identity confirmed as the purified alkaloid, not a ratio extract.
- Loss on drying, heavy metals and microbiology reported per batch.
- Method transfer supported: reference chromatograms supplied with the COA.
- COA, specification sheet and safety data sheet accompany each shipment.
How This Grade Differs
Harringtonine 70% and homoharringtonine 98% are different compounds, not purity grades of the same analyte. Compare each compound’s HPLC assay and related-alkaloid profile on current batch documents before considering a substitution.
Related compounds: homoharringtonine 98%; cephalotaxine 98%. Review each current batch specification independently.
Quality and Documentation
Every lot is assayed by HPLC with related alkaloids integrated individually, then checked for loss on drying, heavy metals and microbiology. Batch records are retained so a shipment can be traced back to the collection lot.
Regulatory Note
This material is supplied as a reference and industrial raw material. It is not offered as a food, dietary supplement or finished pharmaceutical product. Regulatory status, permitted uses, import licensing and labelling are the buyer’s responsibility for the destination market.
Frequently Asked Questions
What specification defines Harringtonine Powder 70%?
70.0%, tested by HPLC.
How is this grade positioned against the other forms offered?
Harringtonine 70% and homoharringtonine 98% are different compounds, not purity grades of the same analyte. Compare each compound’s HPLC assay and related-alkaloid profile on current batch documents before considering a substitution.
What must the certificate of analysis report for this product?
Assay: 70.0% by HPLC, with the balance characterised as related Cephalotaxus alkaloids. Individual limits for homoharringtonine and cephalotaxine agreed in the specification. Identity confirmed as the purified alkaloid, not a ratio extract.
What should a buyer confirm before the first order?
A 70% alkaloid grade raises two questions a 98% grade does not: what the balance consists of, and whether the buyer’s method resolves the related alkaloids. Settle both in writing before the first order.
Are you a manufacturer or a trading company?
LongBio is Shaanxi Longsheng Biotechnology Co., Ltd., a direct manufacturer of botanical extracts and functional ingredients integrating R&D, production and export support. Factory review can be arranged by video or an on-site visit.
Can I request the current batch COA before ordering?
Yes. Request the applicable current or representative COA and compare product identity, method, limits and results before approving a purchase order.
What is the minimum order quantity?
The regular MOQ is typically 1 kg. An evaluation sample of 10-20 g can usually be arranged before a formal order, subject to stock.
Do you support custom specifications or packing?
Alternative assay targets, particle size, packing and private-label requirements can be reviewed case by case, subject to production feasibility and a revised written specification.
Request COA, Sample or Quotation
Send your target specification, application, order quantity, destination country and required test limits.
Get the current batch COA, a sample or a quotation
