Vitamin A2 is a form of vitamin A that is less common than the more prevalent Vitamin A1. It is primarily found in fish liver oils and certain fish species, such as shark and cod. Vitamin A2, also known as 3,4-didehydroretinol, has a molecular structure that differs from Vitamin A1 (retinol) by the presence of a double bond between carbons 3 and 4. This structural difference results in Vitamin A2 being less biologically active than Vitamin A1, meaning it is less potent in its effects on the body. Despite this, Vitamin A2 still plays a role in maintaining healthy vision, immune function, and cell growth, similar to its more active counterpart. It is important to note that the human body can convert carotenoids, which are found in plants, into Vitamin A, but this conversion is more efficient for the production of Vitamin A1 rather than Vitamin A2.

83945-89-5

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Basic information
1. Product Name: Vitamin A₂
2. Synonyms:
3. CAS NO:83945-89-5
4. Molecular Formula:
5. Molecular Weight: 284.442
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: Vitamin A₂(CAS DataBase Reference)
10. NIST Chemistry Reference: Vitamin A₂(83945-89-5)
11. EPA Substance Registry System: Vitamin A₂(83945-89-5)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 83945-89-5(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 83945-89-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,4 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 83945-89:
(7*8)+(6*3)+(5*9)+(4*4)+(3*5)+(2*8)+(1*9)=175
175 % 10 = 5
So 83945-89-5 is a valid CAS Registry Number.

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