A sourcing reference for L(-)-Proline, with a Industrial Chemicals focus

Q: What is the molecular formula and weight of L(-)-Proline?

For L(-)-Proline, the molecular formula is C5H9NO2 and molecular weight about 115.06 g/mol (CAS 147-85-3). These are published physical properties; exact purity, specification and packaging follow the batch COA and order confirmation.

2026-11-05 · Keyword：L(-)-Proline · CAS 147-85-3 · Jinan Shenghe Chemical Co., Ltd. · 中文

Putting L(-)-Proline (CAS 147-85-3) into Industrial Chemicals brings up a phrase you'll hear more than you'd expect: can this batch run on our line? To answer that honestly, you can't lean on the labelled figure alone. This page lists the checks that actually matter.

What it does in the system

What actually decides the result is not a single number.

Industrially, the value of L(-)-Proline (CAS 147-85-3) is rarely on the spec sheet — it is whether it stably meets your process window. In Industrial Chemicals, its purity, impurity profile and batch consistency usually matter more than a single 'assay' number, because what really moves the finished result is often the ignored impurities and physical properties. Comparable grades:

Magnesium Chloride (CAS 7786-30-3)：a comparable grade often evaluated alongside。
Zinc Citrate (CAS 546-46-3)：a comparable grade often evaluated alongside。
L-Threonic Acid Calcium (CAS 70753-61-6)：a comparable grade often evaluated alongside。
Calcium Citrate Malate (CAS 159771-97-8)：a comparable grade often evaluated alongside。
Calcium Citrate (CAS 813-94-5)：a comparable grade often evaluated alongside。
Calcium acetate (CAS 62-54-4)：a comparable grade often evaluated alongside。
edta iron(iii) sodium salt (CAS 15708-41-5)：a comparable grade often evaluated alongside。
ferric citrate (CAS 3522-50-7)：a comparable grade often evaluated alongside。

Key selection dimensions

Most practically, the top item is: Define the end use and process window first, then work back to required purity and impurity limits — not the other way around.

Check compatibility with other materials in the system; run a trial when unsure.

Match packaging and feeding method to on-site equipment so the material is usable on arrival.

Retain samples of critical lots and run third-party checks; do not rely on the supplier COA alone.

Its typical specs: name L(-)-Proline, CAS 147-85-3, formula C5H9NO2, MW 115.06 g/mol, standard purity per batch COA, packaging confirmed per order, storage keep sealed in a cool, dry place. Final values follow the batch COA and order confirmation.

The easiest things to miss

Comparing price but not impurity profile: same assay with different impurities can yield wildly different results.

Skipping samples and scaling up: going straight to volume most often fails on compatibility.

Ignoring transport and storage: most 'arrived-dead' cases trace back to loose handling.

A few things people ask

How do I compare value across suppliers of L(-)-Proline at the same spec?

Don't just compare price per kg — compute usable yield. Purity, batch consistency and documentation completeness all affect what actually makes it through your QC; line up the key COA values across vendors before opening the price conversation.

Signal to switch suppliers of L(-)-Proline?

If key impurities drift >10% between consecutive lots, or two on-site re-tests in a row fail, start qualifying a second source — don't wait for a line stoppage.

How often should the L(-)-Proline MSDS be refreshed, and is it a regulation?

MSDS has no fixed refresh cadence, but it should be revisited whenever the regulation, customer standard, or the molecular/impurity profile changes; an annual version check keeps arrival documents from going stale.

What is the molecular formula and weight of L(-)-Proline?

For L(-)-Proline, the molecular formula is C5H9NO2 and molecular weight about 115.06 g/mol (CAS 147-85-3). These are published physical properties; exact purity, specification and packaging follow the batch COA and order confirmation.

Worth comparing alongside

See site search for L(-)-Proline or browse the Organic Chemicals directory.

How to get files & a quote

Jinan Shenghe Chemical Co., Ltd. supplies chemical raw materials and fine chemicals; a COA ships with every batch, with MSDS and technical data sheets available on request. In your enquiry include product name, CAS, target purity and packaging, and we will provide documents and a quote to the relevant standard.

Contact: info@chemsp.cn | +86-18553102138

Note: This page is for industrial raw-material technical discussion only. Products are supplied for industrial and research use, not for consumer or medical use. Drinking-water, food, cosmetic or pharmaceutical applications must meet applicable regulations and customer standards; specifications, compliance documents and transport requirements follow the batch COA and order confirmation.

Data source & notes

Physical data in this page (formula, molecular weight, etc.) is referenced from public chemical databases such as PubChem, ChemSpider and the CAS Registry — intrinsic published properties of the substance.The CAS number (147-85-3) of L(-)-Proline is the authoritative registry identifier from CAS, useful for precise cross-database verification.Purity, packaging, storage and transport follow the batch COA and order confirmation documents; application notes are general industry experience and any specific process must be validated and assessed for compliance.