1,3-Oxathiolan-2-ylideneurea, also known as OTU, is a chemical compound with the molecular formula C3H5N3O2S. It is a cyclic urethane derivative of 1,3-oxathiolan, which is a five-membered heterocyclic ring containing oxygen and sulfur atoms. OTU is widely used as a protecting group in organic synthesis, particularly for carboxylic acids, due to its stability and ease of removal under mild conditions. The compound forms a stable amide linkage with the carboxylic acid, protecting the acid group from unwanted reactions. The deprotection of OTU-protected carboxylic acids can be achieved through various methods, such as treatment with hydroxylamine or hydrazine, making it a valuable tool in peptide synthesis and other chemical transformations.

5997-41-1

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Basic information
1. Product Name: 1,3-Oxathiolan-2-ylideneurea
2. Synonyms: 1,3-Oxathiolan-2-ylideneurea;N-(Aminocarbonyl)-1,3-oxathiolan-2-imine;N-Carbamoyl-1,3-oxathiolan-2-imine
3. CAS NO:5997-41-1
4. Molecular Formula: C₄H₆N₂O₂S
5. Molecular Weight: 146.17
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 5997-41-1.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 1,3-Oxathiolan-2-ylideneurea(CAS DataBase Reference)
10. NIST Chemistry Reference: 1,3-Oxathiolan-2-ylideneurea(5997-41-1)
11. EPA Substance Registry System: 1,3-Oxathiolan-2-ylideneurea(5997-41-1)
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: 5997-41-1(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 5997-41-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,9,9 and 7 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 5997-41:
(6*5)+(5*9)+(4*9)+(3*7)+(2*4)+(1*1)=141
141 % 10 = 1
So 5997-41-1 is a valid CAS Registry Number.

5997-41-1Upstream product

693-08-3 2-hydroxyethyl thiocyanate

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