品 名：L-色氨酸
英文名：L-Tryptophan
分子式：C11H12N2O2
分子量：204.23
法定編號(hào)（CAS）：73-22-3
性 狀：L-色氨酸為白色至黃白色晶體或結(jié)晶性粉末。無(wú)臭或微臭，稍有苦味。熔點(diǎn)289℃（分解）。長(zhǎng)時(shí)間光照則著色。與水共熱產(chǎn)生少量吲哚。如在氫氧化鈉、硫酸銅存在下加熱，則產(chǎn)生多量吲哚。色氨酸與酸在暗處加熱，較穩(wěn)定。與其他氨基酸、糖類(lèi)、醛類(lèi)共存時(shí)極易分解。如無(wú)烴類(lèi)共存，與5mol/L氫氧化鈉共熱至125℃仍穩(wěn)定。用酸分解蛋白質(zhì)時(shí)，色氨酸完全分解，生成腐黑物。略溶于水（1.1g/100ml，25℃），溶于熱水、熱乙醇、稀鹽酸和堿性氫氧化物溶液。
用 途：營(yíng)養(yǎng)增補(bǔ)劑?？寡趸瘎?/span>L-色氨酸是人體重要的神經(jīng)遞質(zhì)------5-羥色胺酸的前體，是人體的必需氨基酸之一。
包 裝：25kg/桶
質(zhì)量標(biāo)準(zhǔn)：USP24、AJI92，FCCIV
白色至微黃色結(jié)晶性粉末
White –like crystalline powder
熾灼殘?jiān)?/span>
Residue on ignition
L-Tryptophan
Molecular Formula: C11H12N2O2
Molecular Weight: 204.23
CAS：72-22-3
DESCRIPTION: White to yellow white crystal or crystalline powder. Odorless or slight odor. Slightly bitter taste. Melting point is 289 ℃ (decomposition). Colored in long light. Heated with water produces a small amount of indole. Heating in the presence of sodium hydroxide, copper sulphate produced indole. Heated tryptophan and acid in the dark, which more stable. Easily decompose with other amino acids, sugars, aldehydes. It is stable which heated with 5mol / L sodium hydroxide to 125 ℃ if no hydrocarbon coexistence. Decomposed protein by acid, the tryptophan completely decomposed, producing rot black material. Slightly soluble in water (1.1g/100ml, 25 ℃), soluble in hot water, hot ethanol, dilute hydrochloric acid and alkaline hydroxide solution.
APPLICATION: Nutritional supplements. Antioxidants. L-tryptophan is an important neurotransmitter in the human body ------ 5 - hydroxytryptophan precursor, is one of the essential amino acids the human body.
Packing: 25kg / barrel
Quality standard: USP24, AJI92, FCCIV