Glycin[1]
IUPAC name	2-(4-hydroxyphenyl)aminoacetic acid
Other names	N-(4-hydroxyphenyl)glycine p-hydroxyanilinoacetic acid photoglycine
Identifiers
CAS number	[122-87-2]
SMILES	OC(CNC1=CC=C(O)C=C1)=O
Properties
Molecular formula	C8H9NO3
Molar mass	167. IUPAC Nomenclature is a system of naming Chemical compounds and of describing the science of Chemistry in general CAS registry numbers are unique numerical identifiers for Chemical compounds Polymers biological sequences mixtures and Alloys They are also referred to A chemical formula is a way of expressing information about the Atoms that constitute a particular Chemical compound, and how the relationship between those atoms changes Molar mass, symbol M, is the Mass of one mole of a substance ( Chemical element or Chemical compound) 16 g/mol
Melting point	248 °C
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references

Glycin, or N-(4-hydroxyphenyl)glycine, is N-substituted p-aminophenol. The melting point of a solid is the temperature range at which it changes state from solid to Liquid. In Chemistry, the standard state of a material is its state at 1 bar (100 Kilopascals exactly It is a photographic developing agent used in classic B&W developer solutions. ^[2] It is a derivative of the amino acid glycine. In Chemistry, an amino acid is a Molecule containing both Amine and Carboxyl Functional groups In Biochemistry, this Glycine (abbreviated as Gly or G) is the Organic compound with the formula NH2CH2COOH When fresh, it is typically characterized as thin plates of white or silvery powder, turning brown with age. It is sparingly soluble in water and most organic solvents; it is readily soluble in alkalies and acids.

Glycin is related to p-aminophenol and Metol. 4-Aminophenol is a white powder It is a Breakdown product of Paracetamol (acetaminophen U Metol is a developing agent used in b&w Photographic developers In its pure form it is a Solid rather light-sensitive Chemical which is the half Compared to Metol, glycin has a carboxyl group attached to the methyl group of the Metol. This weakens the reduction potential of the compound and therefore Metol is superior as a developing agent. Glycin is rarely used as a developing agent today, primarily because of the reason above, and it is expensive and manufactured for specialty applications only. It also has limited shelf life compared to Metol and Phenidone.

Glycin can be synthesized by a number of ways. One method is to react p-aminophenol with chloracetic acid in a solvent and purify glycin. Chloroacetic acid is the Chemical compound with the formula ClCH2CO2H

Other uses of glycin can be found in some procedures of analytical chemistry.

References

1. ^ Merck Index, 11th Edition, 4771.
2. ^ Photographic Chemical Descriptions