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D-Aspartic Acid

速览

D-Aspartic Acid —— 致诚生物供货速览

致诚生物（Zhicheng Bio）从中国上海供应D-Aspartic Acid，CAS 1783-96-6，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
1783-96-6
分子式
C4H7NO4
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
83887
报价方式
邮件询盘（zhicheng1@zhicheng-bio.cn），官网不展示价格
运动营养 undefined

D-Aspartic Acid

CAS 1783-96-6 · C4H7NO4

D-Aspartic Acid 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。

¥45 – ¥50.4 /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。

类别: 运动营养
供货状态: undefined
包装: 25 kg 袋装、箱装或桶装（标准）

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。

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运费与交期

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索取精确报价

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1783-96-6
分子式C4H7NO4
分子量133.10
EINECS217-234-6
别名D-Aspartic acid, DAA, D-Asp, (2R)-2-aminobutanedioic acid, D-aminosuccinic acid
外观White crystalline powder
溶解性Sparingly soluble in water
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
Enantiomeric purity (D-form)—Chiral HPLC or optical rotation
Specific optical rotation—Polarimetry
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

The entire commercial risk on this product is chirality. L-aspartic acid is a bulk commodity sold at a fraction of the price of the D form, the two are chemically identical to any non-chiral assay, and they share the same molecular formula and molecular weight. A COA showing 'assay 99% aspartic acid' is not evidence you received D-aspartic acid. Insist on a chiral method with a stated L-isomer limit.

02

Optical rotation is the cheap sanity check: the two enantiomers rotate light in opposite directions. If the COA carries a rotation with the correct sign and magnitude, that is at least a first-pass confirmation before a full chiral chromatographic method.

03

Aspartic acid is a dicarboxylic amino acid — two carboxyl groups and one amine — so it is distinctly acidic in solution and will pull an unbuffered blend's pH downward. It behaves in a formula more like a food acid than like a neutral amino acid.

04

Free aspartic acid is only sparingly water-soluble, which is why it usually appears in capsules or unflavoured scoops rather than in clear beverages, and why the sodium salt exists for liquid applications.

05

The published human evidence on D-aspartic acid supplementation is genuinely mixed and includes null and negative results in resistance-trained men at both 3 g and 6 g per day. Marketing copy on a finished product should be written by someone who has read those papers — see the literature section.

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。

Sports-nutrition and hormone-support supplement formulations
Capsules and unflavoured powders
Research and analytical reference use
Peptide synthesis and biochemical research
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 StatesFDA's amino-acid food-additive regulation lists 'L-Aspartic acid' — the L enantiomer only. D-aspartic acid is NOT a listed form, and the regulation is explicit that it covers the named amino acids in the free, hydrated or anhydrous form or as hydrochloride, sodium or potassium salts. No GRAS notice for D-aspartic acid was identified. US supplement marketing rests on DSHEA and possibly on a New Dietary Ingredient notification.21 CFR 172.320(a)(4) (L-Aspartic acid); DSHEA / NDI framework
European UnionD-aspartic acid is likely to require novel-food assessment for food or supplement use in the EU; no authorisation was identified.Regulation (EU) 2015/2283 (novel foods)
ChinaStatus as a nutrient fortification substance / food additive under Chinese national standards to be confirmed.GB 14880-2012 (nutrient fortification substances), GB 2760 (food additives), and NHC new-food-ingredient announcements
JapanNo 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。

  1. In resistance-trained men taking 3 g/day for 28 days alongside heavy resistance training, D-aspartic acid supplementation had no effect on body composition, muscle strength, or serum total and free testosterone, luteinising hormone, gonadotropin-releasing hormone or oestradiol. Willoughby DS, Leutholtz B. Nutr Res. 2013;33(10):803-810. PMID 24074738DOI 10.1016/j.nutres.2013.07.010原文
  2. In a randomised double-blind placebo-controlled trial, 22 resistance-trained men took 6 g/day of D-aspartic acid or placebo through twelve weeks of supervised periodised resistance training, with basal total and free testosterone, oestradiol, sex-hormone-binding globulin, isometric strength and muscle cross-sectional area as outcomes. Melville GW, Siegler JC, Marshall PWM. PLoS One. 2017;12(8):e0182630. PMID 28841667DOI 10.1371/journal.pone.0182630原文
  3. In 24 resistance-trained men randomised to placebo, 3 g/day or 6 g/day of D-aspartic acid for 14 days, the study explored responsiveness by initial testosterone level after previous work had reported increases in sedentary men but no significant hormonal change in resistance-trained men. Melville GW, Siegler JC, Marshall PW. J Int Soc Sports Nutr. 2015;12:15. PMID 25844073DOI 10.1186/s12970-015-0078-7原文
  4. In male climbers, short-term D-aspartic acid supplementation did not affect serum biomarkers associated with the hypothalamic-pituitary-gonadal axis. Crewther B, Witek K, Draga P, et al. Int J Sport Nutr Exerc Metab. 2019;29(3):259-264. PMID 29893592DOI 10.1123/ijsnem.2018-0076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

01How do I know I'm getting D-aspartic acid and not the cheap L form?
Only from a chiral method. L-aspartic acid is a commodity at a fraction of the price, and it is indistinguishable from the D form by molecular formula, molecular weight or a standard total assay. Ask us for the manufacturer's chiral HPLC method and its L-isomer limit, plus the specific optical rotation with its sign. We will get both onto the specification sheet before you order.
02Will it acidify my formula?
Yes. Aspartic acid has two carboxyl groups and behaves more like a food acid than a neutral amino acid. In an unbuffered blend expect the pH to drop, and re-titrate accordingly.
03Can I use it in a clear beverage?
Free aspartic acid is only sparingly water-soluble, which is why this ingredient is usually capsuled or scooped rather than dissolved. If you need a liquid format, the sodium salt is the route people take — tell us and we will look at sourcing it.
04What does the human evidence actually show?
It is mixed, and we would rather you know that from us than from a regulator. Randomised trials in resistance-trained men at 3 g/day and 6 g/day have reported no changes in testosterone or body composition versus placebo. We supply the raw material and the references; the claims on your finished product are yours to substantiate.
05D-Aspartic Acid 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。
06下单前能否获取 D-Aspartic Acid 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。
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