Submit an RFQ for Rosuvastatin tert-Butyl Ester supplier (CAS 355806-00-7) in reference-standard or bulk-technical grade, with WHO-GMP documentation and full export support. RFQs receive a response within 24-48 hours.
● WHO-GMP Certified Facility ● Both Grades Available ● COA With Every Batch
Rosuvastatin tert-Butyl Ester — Product Overview

Confirm before you RFQ: CAS 355806-00-7 is distinct from Rosuvastatin API itself (CAS 287714-41-4). This compound is the tert-butyl ester intermediate/impurity form. Specify clearly in your RFQ which compound you need — mixing these up is a common and costly sourcing error.
Which Grade Does Your RFQ Need?
Reference Standard
Milligram-scale quantities with full NMR/MS/HPLC analytical data package. Best for method development, impurity qualification, and QC testing.
Bulk / Technical
Gram-to-kilogram scale with a standard Certificate of Analysis. Best for synthesis, process development, and scale-up work.
Specifying the correct grade in your RFQ from the start avoids a mismatched quote and speeds up turnaround — see the FAQ section below if you’re unsure which one applies to your use case.
Why Submit an RFQ Instead of a Generic Inquiry
A properly specified RFQ — grade, quantity, target market, and documentation needs stated upfront — lets us return accurate, grade-matched pricing on the first response instead of a back-and-forth clarification cycle. At minimum, include:
- Grade required (reference standard or bulk-technical)
- Target quantity
- Destination country / target market
- Required documentation (e.g., NMR/MS data if reference standard)
- Timeline for delivery
RFQ and Bulk Order Details
| Detail | Reference Standard |
|---|---|
| Minimum Order Quantity | 1-25kg |
| Packaging Options | drum |
| Indicative FOB Price | – |
| Lead Time | 3-4 week |
| Payment terms | TT, LC, Credit |
A sample is available before converting your RFQ into a confirmed order, so you can independently verify identity and purity first.
Documentation Provided With Your Order from Rosuvastatin tert-Butyl Ester supplier
Certificate of Analysis
Batch-specific COA; content depth varies by grade (see below).
MSDS/SDS
Current safety data sheet covering handling, storage, and hazard classification.
Analytical Data Package
NMR, MS, and HPLC chromatogram provided with reference-standard grade orders.
Certificate of Origin
Export documentation for bulk shipments, supporting customs clearance and import registration.
Why Source From a WHO-GMP Certified Manufacturer
WHO-GMP certification confirms our facility has been assessed against World Health Organization Good Manufacturing Practice guidelines. For this specific compound, that matters because much of what’s listed across the market is marked Research Use Only — not GMP-supported. If your end use requires GMP-grade material, state this explicitly in your RFQ; we’ll confirm current certification scope and whether it applies to your requested grade.
Export Markets and Shipping Capability
We export to ASIA, North America, SEA,GULF. Reference-standard (milligram) quantities are typically dispatched by international courier for fast turnaround, while bulk-technical shipments move by air or sea freight depending on volume.

Why Choose Us as Your Rosuvastatin tert-Butyl Ester Supplier
- WHO-GMP certified manufacturing with clear, disclosed GMP scope per grade
- 9+ years of export experience supplying statin-related APIs and intermediates
- Both grades stocked — reference standard and bulk-technical, so your RFQ gets matched correctly the first time
- Fast RFQ turnaround with technical support to confirm identity and grade before you order
How to Submit Your RFQ
- Specify Grade, Quantity & Target Market — Tell us reference-standard or bulk-technical, your target quantity, and destination country.
- Receive COA, Spec Sheet & RFQ Pricing — We’ll confirm grade match and return a spec sheet with indicative pricing.
- Request a Sample (Optional) — Independently verify identity and purity before converting your RFQ to a confirmed order.
- Confirm Order & Export Documentation — Finalize pricing, payment terms, and documentation for shipment.
Submit Your RFQ
Use the button below to reach our export team, or embed your preferred WordPress form plugin (e.g. WPForms, Gravity Forms, Contact Form 7) directly beneath this section — include a grade selector (Reference Standard / Bulk-Technical / Not Sure) as one of the fields.
Frequently Asked Questions
What information should I include in my RFQ?
Specify the grade you need (reference standard or bulk-technical), target quantity, destination country, required documentation (e.g. NMR/MS data for reference standard), and your timeline. This lets us return an accurate, grade-matched quote on the first response.
What is the MOQ for bulk-technical grade vs. reference-standard grade?
Bulk-technical grade MOQ is typically 1kg to 25kg, while reference-standard grade is sold in smaller quantities.
Confirm current minimums for your required grade when submitting your RFQ.Is CAS 355806-00-7 the same as Rosuvastatin API?
No. CAS 355806-00-7 is the tert-butyl ester form, distinct from Rosuvastatin API itself, which is registered under CAS 287714-41-4. Confirm which compound you need before submitting your RFQ.
Can I request a sample before submitting a full RFQ?
Yes, sample quantities are available for independent testing before you commit to a bulk order. Mention the sample request in your RFQ and we’ll confirm terms and turnaround time.
What is the typical RFQ response and lead time?
We typically respond to RFQs within 24-48 hours. Order lead time after confirmation is typically 3-5 weeks, depending on grade and quantity.
Do you export with compliance support to regulated markets?
Yes, we support export to both regulated and semi-regulated markets and provide the documentation typically required for import registration. Confirm your specific market requirements in your RFQ.
Submit Your RFQ Now
WHO-GMP certified. Both grades available. Fast, accurate RFQ turnaround.
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