L-(-)-Threonine CAS 72-19-5 (H-Thr-OH) Mayeso 99.0~101.0% Factory High Quality

AJI97
L-(-)-Threonine (H-Thr-OH) (CAS: 72-19-5) AJI 97 Njira Yoyesera
Chizindikiritso: Fananizani kuchuluka kwa mayamwidwe a infrared a chitsanzo ndi njira ya potaziyamu bromide disc.
Kuzungulira Kwapadera [α]20/D: Zitsanzo Zouma, C=6, H2O
State of Solution (Transmittance): 1.0g mu 10ml ya H2O, spectrophotometer, 430nm, 10mm cell makulidwe.
Chloride (Cl): 0.7g, A-1, ref: 0.40ml ya 0.01mol/L HCl
Ammonium (NH4): B-1
Sulfate (SO4): 1.2g, (1), ref: 0.50ml ya 0.005mol/L H2SO4
Chitsulo (Fe): 1.5g, ref: 1.5ml ya Iron Std.(0.01mg/ml)
Zitsulo Zolemera (Pb): 2.0g, (1), ref: 2.0ml ya Pb Std.(0.01mg/ml)
Arsenic (As2O3): 2.0g, (1), ref: 2.0ml ya As2O3 Std.
Ma Amino Acid Ena: Zitsanzo Zoyesera: 50μg, B-6-a, kuwongolera: L-Thr 0.25μg
Kutaya pa Kuyanika: pa 105 ℃ kwa maola atatu.
Zotsalira pa Ignition (Sulfated): AJI Test 13
Kuyesa: Zitsanzo zouma, 120mg, (1), 3ml ya formic acid, 50ml ya glacial acetic acid, 0.1mol/L HCLO4 1ml = 11.912mg C4H9NO3
Mayeso a pH: 1.0g mu 20ml ya H2O

Chithunzi cha USP35-NF30
TANTHAUZO
Threonine ili ndi NLT 98.5% ndi NMT 101.5% ya L-threonine (C4H9NO3), yowerengedwa pa zouma.
CHIZINDIKIRO
A. KUYAMBIRA KWA INFRARED <197K>
ZOYESA
NTCHITO
Chitsanzo: 110 mg ya Threonine
Chopanda kanthu: Sakanizani 3 ml ya formic acid ndi 50 ml ya glacial acetic acid.
Titrimetric system
(Onani Titrimetry <541>)
Mode: Direct titration
Titrant: 0.1 N perchloric acid VS
Kuzindikira komaliza: Potentiometric
Kusanthula: Sungunulani Chitsanzo mu 3 ml ya formic acid ndi 50mL ya glacial acetic acid.Titrate ndi Titrant.Chitani kutsimikiza kopanda kanthu.
Werezerani kuchuluka kwa Threonine (C4H9NO3) mu Zitsanzo zomwe zatengedwa:
Zotsatira = {[(VS-VB) xNxF]/W} x100
VS= Voliyumu ya Titrant yogwiritsidwa ntchito ndi Zitsanzo (mL)
VB = Voliyumu ya Titrant yodyedwa ndi Chopanda kanthu (mL)
N = chizolowezi chenicheni cha Titrant (mEq/mL)
F= chinthu chofanana, 105.1mg/mEq
W = kulemera kwachitsanzo (mg)
Njira zolandirira: 98.5% ~ 101.5% pazowuma
ZOCHITSA
KUYATSA ZOKHALA <281>: NMT 0.1%
CHLORIDE NDI SULFATE, Chloride <221>
Njira yothetsera: 0.50mL ya 0.020 N hydrochloric acid
Chitsanzo: 0.73g ya Threonine
Njira zolandirira: NMT 0.05%
CHLORIDE NDI SULFATE, Sulfate <221>
Njira yothetsera: 0.10mL ya 0.020 N sulfuric acid
Chitsanzo: 0.33g ya Threonine
Njira zolandirira: NMT 0.03%
IRON <241>: NMT 30ppm
Chotsani zotsatirazi:
ZINTHU ZONSE, Njira I <231>: NMT 15ppm
ZOKHUDZANA NDI COMPOUNDS
Diluent: Hydrochloric acid ndi madzi (1:99)
Njira yothetsera kuyenerera: 0.4mg/mL iliyonse ya USP L-Threonine RS ndi USP L-Proline RS mu Diluent
Njira yothetsera: 0.05mg/mL ya USP L-Threonine RS mu Diluent.[Dziwani - Yankho ili lili ndi ndende yofanana ndi 0.5% ya yankho la Zitsanzo.]
Yankho lachitsanzo: 10mg/mL ya Threonine mu 2 N hydrochloric acid
Chromatographic system (Onani Chromatography <621>, Thin-Layer Chromatography.)
Njira: TLC
Adsorbent: 0.25-mm wosanjikiza wa chromatographic silica gel osakaniza
Kuchuluka kwa ntchito: 5μL
Kupanga zosungunulira: Mowa wa Butyl, glacial acetic acid, ndi madzi (3:1:1)
Utsi wopopera: 2 mg/mL wa ninhydrin wosakaniza wa mowa wa butyl ndi 2N acetic acid (95:5)
Kuyenerera kwadongosolo
Zofunika pazabwino: Chromatogram ya njira yothetsera kukwanira kwa System imawonetsa mawanga awiri olekanitsidwa bwino.
Kusanthula
Zitsanzo: Njira yothetsera kuyenerera kwadongosolo, yankho lokhazikika, ndi yankho lachitsanzo.
Mukayanika mbaleyo, pukutani ndi Spray reagent, ndi kutentha pakati pa 100 ° ndi 105 ° kwa mphindi 15.Yang'anani mbaleyo pansi pa kuwala koyera.
Njira zolandirira: Malo aliwonse achiwiri a Sample solution si aakulu kapena okulirapo kuposa malo oyambira a Standard solution.
Zonyansa zapayekha: NMT 0.5%
Zonyansa zonse: NMT 2.0%
MAYESO AKE
KUSINTHA KWA MASO, Kuzungulira Kwachindunji <781S>
Njira yothetsera: 60 mg/mL m'madzi
Zovomerezeka zovomerezeka: -26.7 ° mpaka -29.1 °
PH <791>
Yankho lachitsanzo: 50 mg/mL yankho
Zovomerezeka zovomerezeka: 5.0 ~ 6.5
KUYANUKA KWA LOSSON <731>: Yanikani chitsanzo pa 105℃ kwa 3 h: imataya NMT 0.2% ya kulemera kwake.
ZOWONJEZERA ZOFUNIKA
KUPAKA NDI KUSEKA: Sungani m’zotengera zotsekedwa bwino.
MFUNDO ZA USP REFERENCE <11>
USP L-Proline RS
USP L-Threonine RS