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Bulk Powder Tauroursodeoxycholic Acid TUDCA
Pure Retinol Powder
Name: Retinol Powder
Relative Name: Retinol
CAS No.: 68-26-8
EINECS : 200-683-7
Molecular Weight: 286.452
Molecular Formula: C20H28O
Melting point: 61-63 ºC
Vitamin A, chemical name as retinol, is the earliest vitamin being discovered. There are two types of Vitamin A: one is retinol which is the initial form of VA, it only exists in animals; another one is carotene. Retinol can be composited by β-carotene coming from plants. Inside the body, under the catalysis of β-carotene-15 and 15′-double oxogenase, βcarotene is transformed into ratinal which is returned to retinol by the performance of ratinal reductase. Thusβ-carotene is also called as vitamin precursor.
tems |
Specification |
Description |
Light Yellow Crystal Powder |
Identification A: Thin-Layer Chromatographic B: Related substance C: Color reaction |
To conform, EP To conform, EP To conform, EP |
Related substance ratios A300/A326 A350/A326 A370/A326 |
≤ 0.60, EP ≤ 0.54, EP ≤ 0.14, EP |
Retinol |
≤ 1.0% , EP ( or HPLC) |
Acid Value |
≤ 2.0% , EP |
Peroxide value |
≤10.0, EP |
Heavy metals ( as pb) |
≤ 5 mg/kg, CP |
Arsenic |
≤ 1 mg/kg, CP |
Microbiological tests Total bacteria count Total mold& yeast count Coliforms Salmonella |
≤ 1000 cfu/g, GB/T 4789 ≤ 100 cfu/g, GB/T 4789 Less than 30 mpn 100G, GB/T 4789 n.d /10g, SNO332 |
Assay |
≥1,800,000 IU/g, EP |
1,Prevent night blindness and vision loss; it’s helpful to the treatment of eye diseases. (VA could promote the formation of photo pigment inside eyes)
2,Anti-respiratory-infection
3,Immune-system enhancing
4,Promote early recovery.
5,Keep healthy of organizations or organ surface.
6,Remove senile plaques
7,Promote healthy growth, strong muscularity, protect skin, hair, teeth and teeth gums.