138937-28-7 Usage
General Description
DIHYDROXYINDOLINE HBR, also known as 3,3'-Dihydroxy-2,2'-Bianthranol Hydrobromide, is a chemical compound that belongs to the class of indoline derivatives. It is commonly used in the synthesis of various organic compounds, pharmaceuticals, and dyes. DIHYDROXYINDOLINE HBR is a white to off-white crystalline powder that is soluble in water and ethanol. It is primarily utilized as a building block in the production of a wide range of chemical products, and it is also used in the research and development of new drugs and materials. In addition, it is an important intermediate for the preparation of other organic compounds and is often employed in organic synthesis and chemical processes.
Check Digit Verification of cas no
The CAS Registry Mumber 138937-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,3 and 7 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 138937-28:
(8*1)+(7*3)+(6*8)+(5*9)+(4*3)+(3*7)+(2*2)+(1*8)=167
167 % 10 = 7
So 138937-28-7 is a valid CAS Registry Number.
138937-28-7Relevant articles and documents
Preparation method of compound 5,6-dihydroxy indoline and halogen acid salts thereof
-
Paragraph 0082-0085, (2018/04/01)
The invention relates to a preparation method of a compound 5,6-dihydroxy indoline and halogen acid salts thereof. Phenylethylamine SM-0 sold in the market is used as a raw material and firstly reactswith acyl chloride to obtain amide SM-1; amide SM-1 rea