Plot No. C40, Road No. 21Y, MIDC, Wagle Industrial Estate, Thane(W)-400604, MH, India
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L-Cystine
SKU:
TC070M
CAS Number :
56-89-3
Molecular Formula :
C₆H₁₂N₂O₄S₂
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Product Identifier
| Product Name | L-Cystine (From non-animal source) |
|---|---|
| Product Code | TC070M |
| Molecular weight | 240.30 |
| Molecular formula | C6H12N2O4S2 |
| CAS No. | 56-89-3 |
Technical Specification
| Appearance (EP, BP) | White or almost white, crystalline powder |
|---|---|
| Appearance (JP) | White crystals or crystalline powder |
| Solubility (BP, EP) | Practically insoluble in water and in alcohol (96%). It dissolves in dilute solutions of alkali hydroxides |
| Solubility (JP) | Practically insoluble in water and in ethanol (99.5%). It dissolves in 1 mol/L hydrochloric acid TS. |
| Identification 1 : FTIR (JP) | Both spectra exhibit similar intensities of absorption at the same wave numbers |
| Identification A : FTIR (USP) | Matches with the standard pattern |
| Identification A : Specific rotation (EP, BP) | -224.00 to -218.00° (c= 2% in 1M HCl acid at 20 ± 0.5°C, dried substance) |
| Identification B : Specific rotation (USP) | -225.00° to -215.00° (c= 2% in 1N hydrochloric acid at 20°C, perform the measurements immediately after preparation) |
| Identification B : FTIR (EP, BP) | Matches with the standard pattern |
| Identification C : TLC (USP) | The Rf value of the principal spot of the sample solution in the test for organic impurities corresponds to that of the standard solution |
| Identification C : TLC (BP, EP) | The principal spot in the chromatogram obtained with test solution (b) is similar in position, colour and size to the principal spot in the chromatogram obtained with reference solution (a). |
| Identification D : (EP, BP) | Turbidity or a white precipitate develops within 3 min |
| Appearance of solution (EP, BP) | 10% solution in dilute hydrochloric acid R is clear and not more intensely coloured than reference solution Y7 |
| Clarity and color of solution : (JP) | 10% solution in 2M hydrochloric acid TS is clear and colorless |
| Specific rotation (EP, BP) | -224.00 to -218.00° (c = 2% in 1M HCl acid at 20 ± 0.5°C, dried substances) |
| Specific rotation (USP) | -225.00° to -215.00° (c = 2% in 1N hydrochloric acid at 20°C) |
| Specific rotation (JP) | -225.00° to -215.00° (c = 2% in 1M hydrochloric acid at 20°C, after drying) |
| Ammonium : Amino acid analysis (EP) | <= 0.02% |
| Ammonium: (JP, BP) | <= 0.02% |
| Iron (USP, EP, BP, JP) | <= 0.0010% |
| Sulfate (USP) | <= 0.02% |
| Sulfate (JP) | <= 0.028% |
| Sulfate (EP, BP) | <= 0.03% |
| Chloride (USP, EP, BP) | <= 0.02% |
| Chloride (JP) | <= 0.021% |
| Heavy metals (USP, JP, BP) | <= 0.0010% |
| Loss on drying (at 105°C, 2h) : (EP, BP) | <= 0.50% |
| Loss on drying (at 105°C, 3h) : (USP) | <= 0.20% |
| Loss on drying (at 105°C, 3h) : (JP) | <= 0.30% |
| Residue on ignition (USP, JP) | <= 0.10% |
| Sulfated ash (EP, BP) | <= 0.10% |
| Organic impurities 1 : Individual impurities, TLC (USP) | <= 0.20% |
| Organic impurities 2 : Total impurities, TLC (USP) | <= 2.00% |
| Ninhydrin-positive substances, system suitability : Resolution, Amino acid analysis (EP) | >= 1.50 between the peaks due to isoleucine and leucine |
| Ninhydrin-positive substances 1 : for each impurity, Amino acid analysis (EP) | <= 0.20% |
| Ninhydrin-positive substances 2 : total impurities, Amino acid analysis (EP) | <= 0.50% |
| Ninhydrin-positive substances, TLC : (BP) | Complies |
| Assay (Iodometry, dried substance): (EP, BP) | 98.50 - 101.00% |
| Assay (Iodometry, dried basis): (USP) | 98.50 - 101.50% |
| Assay (Nitrogen, dried basis): (JP) | 99.00 - 101.00% |
| Storage | Store below 30°C. |
| Shelf life | 48 months. |
CAS Number :
56-89-3
Molecular Formula :
C₆H₁₂N₂O₄S₂
| Product Name | L-Cystine |
|---|---|
| SKU | TC070M |
| CAS No | 56-89-3 |
| EC No. | 200-296-3 |
| Molecular formula | C₆H₁₂N₂O₄S₂ |
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