ZHICHENG BIO
氨基酸undefined
L-Arginine Base
USP32
¥22 – ¥24.6 /kg按采购量
01产品详情
L-Theanine 98% 98%
速览
L-Theanine 98% —— 致诚生物供货速览
致诚生物（Zhicheng Bio）从中国上海供应L-Theanine 98%（98%），CAS 3081-61-6，非现货，按单排产，每批次随货提供 COA，可另附规格书与 MSDS。询盘请发 zhicheng1@zhicheng-bio.cn，官网不挂价，报价按数量与交货条款单独出。
- 供应商
- 致诚生物 Zhicheng Bio，上海
- CAS 号
- 3081-61-6
- 分子式
- C7H14N2O3
- 规格
- 98%
- 现货状态
- 按单排产
- 随货文件
- 批次 COA；规格书、MSDS 可索取
- 包装
- 25 kg 纸箱/袋，可按需调整
- PubChem CID
- 439378
- 报价方式
- 邮件询盘（zhicheng1@zhicheng-bio.cn），官网不展示价格
认知 / 放松
undefined
L-Theanine 98%
98%
CAS 3081-61-6 · C7H14N2O3
L-Theanine 98% 大宗原料，仅面向 B2B 生产采购——按您的目标规格供货，发货前先提供文件供质检审核。以下为指导价；发送询盘获取正式报价、起订量与交期。
¥88 – ¥98.6 /kg
按采购量 · 到上海交货指导价
价格为到上海交货指导区间，采购量越大越接近低端；原料行情每周波动，具体以询盘报价为准，通常 1 个工作日内回复。
供应要点
- 按您的目标规格供货——适用时对标 USP / FCC / JP 药典
- 报价即附近期批次COA，下单前先过您的QA
- 可与其他SKU拼单，上海一票发运
- 发货前可按需安排第三方检测
每批随附文件
批次COA规格书MSDS / SDS出口文件
发货前可按需安排第三方检测；产地证、非转基因或过敏原声明可按目的地市场要求另行安排。
文件先行
每批附COA、规格书与MSDS——发货前即可交由您的QA审核。
现货储备
核心品类多吨位库存，现货SKU上海即刻发运。
认证供应链
货源来自经审核的认证工厂——ISO、HACCP、Halal与Kosher可提供。
灵活出口
25kg袋/箱/桶装；FOB/CIF/DDP按航线，海运空运均可拼货。
02标识与理化性质
标识与理化性质
本品的化合物标识与理化性质。以随报价出具的规格书与批次COA为准。
| CAS 号 | 3081-61-6 |
|---|---|
| 分子式 | C7H14N2O3 |
| 分子量 | 174.20 |
| EINECS | 221-379-0 |
| 别名 | L-Theanine, N5-ethyl-L-glutamine, gamma-glutamylethylamide, L-glutamic acid gamma-ethylamide, Suntheanine (a trademark of Taiyo, not this material) |
| 外观 | White crystalline powder; odourless, with a slightly sweet and astringent taste |
| 溶解性 | Very freely soluble in water — soluble in 2.6 parts of water at 0 °C and 1.8 parts at 100 °C (i.e. roughly 380 g/L cold and 550 g/L hot). Insoluble in ethanol and ether. |
03规格参数
规格参数
下表为典型参数——以随报价发送的规格书与批次COA为准。
| 项目 | 规格 | 检测方法 |
|---|---|---|
| Assay (L-theanine) | 98% (as offered) — confirm basis and method | HPLC (to be confirmed) |
| pH (1% aqueous solution) | 5-6 | Potentiometric |
| D-theanine / enantiomeric purity | — | Chiral HPLC |
| Residual solvents | — | GC headspace |
| Assay (as-is / dried basis) | — | Titration or HPLC per the applicable monograph |
| Appearance | — | Visual |
| Identification | — | IR / specific optical rotation per monograph |
| Specific optical rotation | — | Polarimetry |
| Loss on drying | — | Gravimetric |
| Residue on ignition / sulphated ash | — | Gravimetric |
| Chloride | — | Per monograph |
| Sulphate | — | Per monograph |
| Iron | — | Per monograph |
| Other amino acids / related substances | — | TLC or HPLC per monograph |
| Heavy metals (Pb / As / Cd / Hg) | — | ICP-MS or per monograph |
| Microbiology (TAMC / TYMC / E. coli / Salmonella) | — | USP <61>/<62> or equivalent |
表中显示「—」的项目，表示我们没有可对外公布的固定限度：该项目在批次COA中如实报出，限度与您的质检共同确认。宁可留空，也不编一个数字。 完整的理化、重金属与微生物指标见规格书——随每份报价提供。
04配方与处理要点
配方与处理要点
我们技术团队对采购本品的客户必讲的几件事——决定一批货在您工艺里能不能用起来的关键点。
01
Theanine's aqueous solubility is exceptional and is the reason it disappears so easily into clear beverages: soluble in 2.6 parts of water at 0 °C and 1.8 parts at 100 °C — on the order of 380 g/L cold. It will not be the limiting ingredient in any drink, gummy syrup or shot.
02
It is insoluble in ethanol and ether, so a hydro-alcoholic tincture will not carry it — an important difference from many botanicals it gets blended with.
03
A 1% solution sits at pH 5-6, which is close to neutral and unusually well behaved for a beverage. Unlike citrulline malate it will not acidify a formulation and unlike arginine base it will not alkalise one.
04
The taste is genuinely a formulation asset rather than a liability: described as slightly sweet in FDA's GRAS assessment and as astringent and sweet in the flavour literature. At typical 100-250 mg doses it needs no masking, in contrast to the BCAAs.
05
Chemically it is the gamma-ethylamide of L-glutamic acid — a substituted glutamine analogue. That means an amino-acid analytical method may or may not resolve it from glutamine and glutamic acid; a theanine-specific HPLC method is what your QA should be asking for.
06
The enantiomer question is commercially real. Only the L form is the tea constituent covered by the FDA GRAS notices; synthetic routes can produce DL-theanine, which is cheaper and analytically invisible to a non-chiral assay. Specify a D-isomer limit.
07
Melting is reported at 217-218 °C, which is comfortable for gummy and confectionery processing, though the practical stability question in a hot, moist gummy slurry is hold time rather than peak temperature.
05应用领域
应用领域
仅面向B2B生产用途——不作任何成品或功效宣称。
Relaxation, focus and sleep-support formulations
Theanine-plus-caffeine 'smart caffeine' blends
Functional beverages, RTDs and instant drink powders
Capsules, tablets and gummies
Chocolate and confectionery inclusions
06各市场法规状态
各市场法规状态
以资料允许的最保守口径陈述原料的法规状态。这是供应链信息，不构成法规意见——成品与目的地市场的合规判断请咨询您自己的法规顾问。
| 市场 | 状态 | 依据 |
|---|---|---|
| United States | Two GRAS notices for L-theanine have closed with 'FDA has no questions' letters: GRN 209 (notifier Taiyo International, closed 5 February 2007) for use as an 'ingredient in several food categories up to 250 milligrams per serving'; and GRN 501 (notifier Zhejiang Tianrui Chemical Co., Ltd., letter dated 10 September 2014) for chemically synthesised L-theanine 'as an ingredient in foods'. A GRAS notice is specific to the notifier's substance and use — it is not transferable to another manufacturer's material without an equivalence assessment. | FDA GRAS Notice Inventory GRN 209 and GRN 501 |
| European Union | L-theanine's EU status needs to be established for the intended use — the key question is whether the material and use fall within the Novel Food Regulation (EU) 2015/2283. | Regulation (EU) 2015/2283 (novel foods); EU Novel Food Catalogue |
| China | Status as a nutrient fortification substance / food additive under Chinese national standards to be confirmed. Theanine is a recognised tea constituent in China; the relevant question is whether the isolated ingredient requires a new-food-ingredient (新食品原料) approval for the intended category. | GB 14880-2012 (nutrient fortification substances), GB 2760 (food additives), and NHC new-food-ingredient announcements |
| Japan | No JP XVIII Official Monograph for this substance was located. | JP XVIII |
07相关研究文献
相关研究文献
本化合物的同行评议文献，标识号均可点击直达原文——不必只听我们说。
以下文献仅用于提供科学背景。它们描述的是针对该化合物已发表的研究，既不是对本原料的宣称，也不是对任何成品的宣称。致诚生物不作任何医疗、健康或功效宣称。
- In a randomised, placebo-controlled, crossover, double-blind trial in healthy adults, L-theanine administration was examined for effects on stress-related symptoms and cognitive function. Hidese S, Ogawa S, Ota M, Ishida I, Yasukawa Z, Ozeki M, Kunugi H. Nutrients. 2019;11(10):2362. PMID 31623400DOI 10.3390/nu11102362原文
- A systematic review and meta-analysis of 50 randomised controlled trials in healthy participants reported small-to-moderate differences between theanine plus caffeine and placebo for cognition, mood and sleep outcomes across the subset eligible for meta-analysis. Payne ER, Aceves-Martins M, Dubost J, Greyling A, de Roos B. Nutr Rev. 2025;83(10):1873-1891. PMID 40314930DOI 10.1093/nutrit/nuaf054原文
- In 27 healthy volunteers, 50 mg caffeine with 100 mg L-theanine improved both speed and accuracy on an attention-switching task at 60 minutes and reduced susceptibility to distracting information in a memory task at 60 and 90 minutes, compared with placebo. Owen GN, Parnell H, De Bruin EA, Rycroft JA. Nutr Neurosci. 2008;11(4):193-198. PMID 18681988DOI 10.1179/147683008X301513原文
- A systematic review examined trials of L-theanine consumption in relation to the management of stress and anxiety levels. Williams JL, Everett JM, D'Cunha NM, et al. Plant Foods Hum Nutr. 2020;75(1):12-23. PMID 31758301DOI 10.1007/s11130-019-00771-5原文
08包装、储存与交期
包装、储存与交期
| 标准包装 | 25kg袋装、箱装或桶装 |
|---|---|
| 定制包装 | 长期客户可安排定制包装与标签 |
| 储存条件 | 阴凉干燥处，原包装密封保存 |
| 交期 | undefined |
| 运输 | 上海海运/空运拼货 · FOB/CIF/DDP按航线 |
09采购问答
采购问答
01Is this L-theanine or DL-theanine?
L, and it is worth insisting on documentation. Synthetic routes can produce the racemate, which a standard non-chiral assay will read as 98% pure theanine. Ask us for the manufacturer's D-isomer limit and the chiral method used — only the L form is the tea constituent covered by the FDA GRAS notices.
02Does your material carry its own GRAS status in the US?
Two L-theanine GRAS notices have closed with FDA 'no questions' letters — GRN 209 (Taiyo, 2007, up to 250 mg per serving) and GRN 501 (Zhejiang Tianrui, 2014, chemically synthesised, as a food ingredient). A GRAS notice belongs to the notifier's substance and use, so tell us who your material must be equivalent to and we will get the manufacturer to address it.
03Enzymatic or chemically synthesised?
Ask, because the answer changes what should be on your specification. Chemical synthesis brings residual-solvent and enantiomeric-purity questions; enzymatic or fermentation routes bring different ones. We will get the route stated in writing and the matching impurity limits into the spec sheet.
04How does it behave in a clear beverage?
Very well. It dissolves at roughly 380 g/L in cold water, gives a pH 5-6 solution at 1%, and tastes slightly sweet with a mild astringency — so no masking is normally needed at 100-250 mg per serving. It will not carry in an alcohol-based liquid, though.
05Is 98% the highest grade available?
98% minimum is the standard bulk grade and is what we hold (about 350 kg in ready stock). If you need a higher assay or a tighter enantiomeric specification for a pharmaceutical or clinical-trial application, tell us the target and we will go back to the manufacturer.
06L-Theanine 98% 的起订量（MOQ）是多少？
MOQ按询盘灵活确定。在询盘中告知目标数量——核心现货SKU通常小试单与多吨位大单都可承接。
07下单前能否获取 L-Theanine 98% 样品？
可以——样品可按需提供，用于评估与实验室验证。在询盘中说明即可，我们逐单确认安排。
10相关产品
您可能还需要
肉碱系列约1周
L-Carnitine HCl
¥225 – ¥252 /kg按采购量
肉碱系列约1周
L-Carnitine Tartrate
68% L-Carnitine / 32% L-Tartaric Acid
¥160 – ¥179.2 /kg按采购量